A Convocation of Eagles

A Convocation of Eagles

21/01/22 | Animal Care, News, Rehabilitation

wildlife

by Lindsay Caskenette | Jan 22, 2021

What do the dates; August 7th, September 21st, and October 20th have in common?  Well, each of these days the Yukon Wildlife Preserve's Wildlife Rehabilitation Centre received a new patient, with each those being an eagle. It started with the Golden Eagles arrival from Watson Lake, followed by a Bald Eagle from Jake's Corner, and another Bald Eagle from Mayo.  While an arrival of an animal, into the centre for care by the team at the Preserve, isn't distinctive; it is unusual to receive an influx of eagles in the fall.

Seen from left to right is the Golden Eagle, the younger Bald Eagle with scapular injury from Jake's Corner, and the older Bald Eagle with carpal infection from Mayo.

Over the years, the Rehabilitation Centre has admitted many eagles - both golden and bald. Some of these occasions have occurred to eaglets, some adults. Some of these have been due to injury to the individual - like from a nest blowing over in strong winds (they're nests are built over years and with time can weigh hundreds of pounds, which for our small northern trees can sometimes be just too much to support).1https://www.nationaleaglecenter.org/eagle-nesting-young/ Often times, we do not know the circumstances around an animals ailment but can gain insight from x-rays as to why an animal might be behaving differently than we might expect - like the successful juvenile bald eagle rehabilitation from summer 2020. A common thread for many of these eagles is admittance timing - usually in the Spring and Summer. 

Several months have passed since the three birds Fall time admittance. This time has allowed each eagle recovery, to some degree but there's much road ahead still for them each. We'll start first with the younger, (white with brown head) Bald Eagle from Jake's Corner.  A fracture to the scapular caused the animal to be flightless in the wild. The injury has healed. The wing was wrapped for 2 months to immobilize the wing but this does cause muscle atrophy - just like in humans who are casted following a bone break. The eagle was contained in a small aviary to help reduce its movements to maintain fracture alignment and eventual bone fusion.

Once this stage of recovery was met, the eagle was moved into the large aviary. This is an important phase of the recovery process for the bird -  movement and flight tests. This individual can fly, and will spend the rest of the winter building up flight muscles in the aviary to support its probable return to the wild in the spring!

The older (full white head) Bald Eagle who suffered from severe chronic infection of the right carpal joint was initially treated with a small hope that even though the integrity of the joint was compromised the eagle might still be able to fly well enough and survive in the wild after the infection was controlled and the wing healed. However, based on most current radiographic imaging and physical exam, done by Dr. Maria Hallock and the Animal Care team, the prognosis is poor. While the infection is cleared and the joint has healed, its integrity is compromised - this will prevent the eagle from being able to fly uninhibited. Observations of the animal in the large aviary has seen it able to gain lift up to 6 feet and fly off the perch within the aviary but unable to maintain latitude for more than 20 feet. 

The Preserve will continue to care for this individaul through the remainder of the winter. We will continue to monitor and observe its behaviour.

Finally, the Golden Eagle has had the longest and most challenging recovery of the three. While we are happy to report that the left foot has recovered from the infection due to porcupine quills; the right foot is severely compromised due to the infection. This has resulted in multiple bone dissolution and loss of the skeletal and ligamentous integrity of the foot and consequently loss of its function. The bird can perch but cannot grasp effectively with the right foot. The bird still has a long way to its full recovery. At this time it does not look probable for the bird to be released back into the wild sucessfully due to this loss of functionality in the foot - an important tool for a bird of bird such as this to capture its food to survive.

The x-ray image of the Golden Eagle's feet shows significantly compromised structure between the right and the left. The left foot was imaged with the banadaging on his feet still. The Golden Eagle is observed to be perching, and with the other birds, more and more. This is a postive progression from when he was often observed resting on stomache and on the ground, rathern than higher perch.

Each of these birds are on their own path to recovery. The Preserve continues to provide care through, mostly now, feeding and observation. These birds eat a lot! If you are able to support the ongoing care of these animals please consider donating to the Wildlife Rehabiliation and Resaearch Centre Fund.

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While we progress through winter and meet spring the Preserve's Animal Care team will reevaluate each individual and their release back to the wild or the alternative. The alternatives could include remaining at the Yukon Wildlife Preserve to live out their life and offer education and an opportunity to personally connect with such a magnificent creature. This will be a significant investment, up to a 25 year commitment, given the birds average lifespan and food requirements, however that the Preserve may not be able to provide this given the expenses. Another alternative may be to place them in another animal care facility or CAZA accredited institution.  Time will tell, to be continued . . .

Photo credits:  L. Caskenette

Lindsay Caskenette

Lindsay Caskenette

Manager Visitor Services

Lindsay joined the Wildlife Preserve team March 2014. Originally from Ontario, she came to the Yukon in search of new adventures and new career challenges. Lindsay holds a degree in Environmental Studies with honours from Wilfrid Laurier University and brings with her a strong passion for sharing what nature, animals, and the environment can teach us.

867-456-7400
Lindsay@yukonwildlife.ca

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A Beginner’s Guide to iNaturalist:

A Beginner’s Guide to iNaturalist:

21/01/22 | Meet the North - Yukon Biodiversity, Research, Wildlife

wildlife

by Joelle Ingram | Jan 22, 2021

This article was made possible thanks to support from the Environmental Awareness Fund. Engage and educate yourself in this 10-part blog series, about Yukon Biodiversity.

5 minute Read and 8:58 minute Video

How to explore the biodiversity in your own backyard:

Hey there! Are you feeling isolated (and who isn’t in this remote territory, during this plague year, in the cold months)? Would you like to connect to nature? Have you considered iNaturalist? It’s a groovy app available on your phone or computer and it’s essentially an encyclopedia to the wide variety of living organisms in your local area and across the globe.

If you’re new to the app, let me give you the basics. First, go outside. Catch some of the fleeting winter sun, take in some fresh air, and observe your surroundings. Next, spot an interesting organism (plant, animal, bug, algae, etc.) and take a nice, full frame photo of it and upload it to the iNaturalist app. Congratulations! You are now an observer and this thing you have photographed is the first of your (many) observations.

Once you have a photo uploaded, it’s time to build a profile for your observation. Tell us what species you photographed, the date the photo was taken, and where it was located. Not sure what you took a photo of? Not a problem. If you take a peek at the screenshot below, you can see a handy dandy drop-down menu that shows up when you click on the species field and suggests, based on your photo, what species you might have photographed. As you can see, the top suggestion for my photo of dwarf fireweed was… dwarf fireweed! What! WITCHCRAFT (which is code for programming I am both impressed by and don’t understand).

iNaturalist - once you upload your photo you can use the drop down photo suggestion prompt to help identify what in fact you are looking at!

If the dark magic of the iNaturalist app suggested species list doesn’t give you a likely answer, someone else can. This is where the identifiers come into play. The iNaturalist community plays host to specialists and seasoned outdoors enthusiasts whose expertise can put a name to the mystery organisms in your photos.

But wait, it’s winter. The insects are dead or dreaming, the fish are under a sizeable roof of ice, and the foliage is exceptionally non-existent. This is all true but that doesn’t mean there aren’t a lot of biodiversity discoveries you can make in the snowy months, far from it in fact. The bird populations in the Yukon change significantly from season to season; the water birds may be gone but the bohemian waxwings are lovely this time of year. We’re also experiencing a rare bird event this winter with the appearance of Steller’s jays. The Steller’s jay is the provincial bird of British Columbia and has only been noted en-masse in the territory twice before this: in 2006 and 1994. This showy blue-black corvid would make a charming addition to your list of iNaturalist observations.

A steller's jay observed in Carcross, Yukon. Photo Credit Cameron Eckert iNaturalist

But wait, there’s more. Act now and you can take advantage of one of the finest animal observing methods gifted to you by winter: animal tracks. Sure, you can spot footprints in mud during the warmer months but the winter offers an endless white canvas for animal feet. Yes, you can also upload photos of animal footprints. Not only do you get to identify the beasties wandering through your neighbourhood but you also learn to identify them even when they aren’t there. That’s some Sherlock level business.

If you don’t feel like meandering outside (and as we move into the colder days, who could blame you), you can check out your local biodiversity from the comfort of your own home. Remember how you enter the location of your observations? That means all observations are placed in a map that lets you check which organisms have been observed in your area or in the destination of your choice.

All the observations in a given region can be seen from a map view. You can then click on each instance to learn more about the obeservation.

Not interested in your home range? No problem, check in on the gibbon observations in Asia, gaze upon the Macaw palm of South America. The iNaturalist map is a wonderful worldwide experience in biodiversity. You can peruse different species in far-ranging areas based on your interests. iNaturalist lets you check out the organisms based on category (frog, insect, flower, etc.), status (wild, threatened, introduced, needs ID, etc.), and date of observation. Mix it up, check it out, and find something new.

Explore iNaturalist through various categories including species, status, and date of observation. 

The iNaturalist app is an approachable means of connecting professionals and the public for the benefit of biodiversity research. The annual Bioblitzes are a great example of this. A Bioblitz is used to determine the health and diversity of an ecosystem by bringing together the local community of both specialists and the enthusiastic public to observe and record as many species as possible in a limited area within an equally limited timeframe to create a “snapshot” of the living things in a specific region. Outside of general curiosity, the data from a Bioblitz can inform decisions about wildlife management and future research.

The 2020 Yukon Bioblitz was held at our very own Yukon Wildlife Preserve in the short span of July 8-10 2020. Not to brag, but the Wildlife Preserve is a great local for a Bioblitz because it’s composed of a diverse array of habitats including forests, meadows, and wetlands which in turn host a variety of plant, animal, and fungi species. Unfortunately, the intentional residents of the Wildlife Preserve were not included in the Bioblitz observations. It would be very impressive to add a muskox or a lynx to your iNaturalist observation repertoire but if they’re full-time residents of the Wildlife Preserve, they’re not necessarily representative of the type or amount of these species that would be present in this area. Alas.

Over the three days of the 2020 Bioblitz, a horde of experts (like Dan Peach - mosquito man) and the public (including me) descended upon the Wildlife Preserve to document every and any species they came across. Even without the residents of the Wildlife Preserve, there were over 400 species recorded during the Bioblitz. That’s a lot! For a little perspective, this count includes:

The Count List
  • 2 species of algae
  • 1 amphibian
  • 22 species of beetle
  • 62 bird species
  • 12 species of moss
  • 1 centipede
  • 18 species of flies
  • 57 species of fungi and lichens
  • 11 species of true bugs
  • 31 species of bees, wasps, ants
  • 18 species of butterflies and moths
  • 8 mammal species
  • 7 species of snails
  • 11 species of dragonflies
  • 1 grasshopper
  • 1 pot worm
  • 8 spider species
  • 182 species of vascular plants
  • And a partridge in a pear tree
  • (Just kidding, partridges aren’t indigenous to the Yukon.)
  • (And neither are pear trees.)

For the full species list and the distribution map, check it out here!

The Bioblitz provides a snapshot of what’s present in the territory but there are 482,443 km² of territory to explore. Imagine what else you could find. Get out there, observe, record, and have a good time!

Video shot and edited by Jake Paleczny.

Joelle Ingram

Joelle Ingram

Human of Many Talents

Joelle is a former archaeologist, former wildlife interpreter, and a full-time random fact enthusiast. She received her master’s degree in anthropology from McMaster University. One of the four people who read her thesis gave it the glowing review “It’s a paper that would appeal to very specific group of people,” which is probably why only four people have read it. Her favourite land mammal is a muskox, her favourite aquatic mammal is a narwhal. She thinks it’s important that you know that.

867-456-7400
 info@yukonwildlife.ca

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1 Mosquito, 2 Mosquito . . .

1 Mosquito, 2 Mosquito . . .

21/01/07 | Meet the North - Yukon Biodiversity, Research, Wildlife

wildlife

by Joelle Ingram | Jan 7, 2021

This article was made possible thanks to support from the Environmental Awareness Fund. Engage and educate yourself in this 10-part blog series, about Yukon Biodiversity.

10 minute Read plus 3:47 minute video. Banner image photo credit: John Borden.

Mosquitoes: the blood-sucking embodiment of tinnitus. Let’s talk about them. If you are a Yukon resident, I’m sure you are painfully aware that our triangle shaped territory plays host to a truly astonishing number of these whining winged menaces. They rise from their slumber in early spring before the ice has even left the lakes to make all your outdoor activities a little bit more annoying. And itchy.

Photo Credit: Dan Peach

Mosquito evasion is a popular summer pastime here in the North so it might seem wild that people would actively seek out mosquitos but that’s the case for many entomologists who go out and willing get bitten by these bugs for science. Dr. Dan Peach from the University of British Columbia recently conducted a mosquito study in the Yukon which identified thirty odd different species of mosquitos including a few that have never been recorded in the territory before!

Dan Peach, a PhD candidate in SFU’s Department of Biological Sciences, feeds a mosquito. Photo Credit SFU News.

Researchers use the shape and relative size of a mosquito’s body parts to identify which type it is as well as scale patterns, colour, and hairs. Obviously, identifying these traits on an insect that could comfortably hang out on a dime isn’t easy. Mosquito identification usually requires a microscope, but experienced researchers can identify different species with the naked eye if the mosquito is holding still. It’s a weird party trick but you could get a lot of mileage out of it during a Yukon summer.

In his studies, Peach has had to be bitten by mosquitos more than 100,000 times. In the works for him is a peer-reviewed guide to Yukon mosquitos. This photo was taken during Yukon Wildlife Preserve-hosted Yukon Bioblitz in summer 2020. Photo Credit: Vince Federoff, Whitehorse Star

The Yukon actually has a long a long history of mosquito research; the first formal record of a mosquito collected in the territory was in 1904. That being said, mosquito surveys aren’t frequent. Before Dr. Peach’s survey, the last mosquito collecting spree was conducted in the early ‘70s. Now you may be asking yourself, “why oh why would anyone want to survey mosquitoes?”

Just like any survey related to biodiversity, it’s important for understanding and monitoring our local ecosystems and improving our understanding of our planet as a whole. Just because something is horrible and bitey doesn’t mean it isn’t ecologically significant and interesting. For example, you may or may not know that only female mosquitoes drink blood while males stick to a diet of plant nectar. That’s right, mosquitoes are pollinators just like bees, bats, butterflies, and… other creatures whose names may or may not start with B. Female mosquitoes also drink plant juice but they do need additional protein to produce eggs and that’s where the blood portion of their diet comes in.

A female Culex pipiens cleans tansy pollen from her proboscis. Photo Credit Mike Hrabar.

Because there is such a diverse array of mosquitoes in the Yukon, I’m not going to get into all of them here (if you want the complete list of every type of mosquito identified in the Yukon, check out Dr. Peach’s mosquito guide for all your mozzie needs coming soon). Instead, I’d like to offer you a sampler pack of what the Yukon mosquito community has to offer starting with my personal favourite, Culex territans. When you’re being eaten alive by clouds of biting bugs during the summer months, I can almost guarantee that none of them are C. territans. See, unlike many other species of mosquito, C. territans rarely if ever feed on warm blooded creatures and instead feed exclusively on amphibians. Amphibians, you know, like frogs. Frogs who are notorious for eating bugs. Bold move, C. territans!

Culex territans Photo Credit: Amoorehouse iNaturalist

Anopheles earlei is sometimes referred to as “Canada’s national mosquito” and it’s not because it smells of maple syrup and has strong opinions about hockey. During the winter, we are blessedly bug free as they all either die or go into hibernation. Canada’s national mosquito got its title due to its interesting hibernation habits: the females like to hibernate en masse inside beaver lodges! Another fun fact about A. earlei is that before the 2020 Bioblitz (a biodiversity survey conducted in a specific area for a limited amount of time. In this case, our very own Wildlife Preserve!), this particular mosquito hadn’t been reported in the Yukon since 1919, a whole entire century ago.

Footage from Dr. Dan's visit during the 2020 Yukon Bioblitz conducted at the Yukon Wildlife Preserve. Video shot and edited by Jake Paleczny. 

Speaking of gaps in recording, let me introduce our third contestant: Aedes euedes. Up until 2019, A. euedes has never been recorded in the Yukon. This doesn’t mean they haven’t been here, but when there are multiple decades between surveys, some things might slip between the cracks. What else is lurking out there? Only future biodiversity surveys will tell!

While these three species are relatively rare, the most common mosquitoes in the Yukon belong to a group called “snowmelt mosquitoes” which sounds kind of pretty until you remember it’s referring to tiny airborne vampires. Like any species that survives and thrives in the North, snowmelt mosquitoes need to be pretty hearty. Instead of laying their eggs in lakes, ponds, or marshes, they use depressions in the ground that are temporarily filled with water during the early spring melt (hence the name). These pools formed by snow melted on sunny spring days will often freeze over at night, but snowmelt mosquitoes can survive in chilly water and fluctuating temperatures. Their chosen spawning puddles gives these bugs a bit of an advantage: they avoid getting eaten by critters that live in permanent bodies of water like fish or other bugs. Using puddles that thaw while bigger bodies of water are still frozen also gives them a leg up on the relatively brief snow-free seasons.

Researchers collect mosquitos in the dense forest of the Yukon. Photo Credit: Dan Peach

One of these snowmelt mosquitoes, Aedes communis, is often found in treed areas and it is a known vector (an agent that carries and transmits a disease) for snowshoe hare virus. While this is a bummer for snowshoe hares, it isn’t a problem for humans unless we get a huge dose of it and even then, it just presents as flu-like symptoms.

Culex tarsalis may be less common in the Yukon than A.communis, but as far as mosquitoes goes, it’s much more intimidating. Known as the “Western Encephalitis Mosquito” and “the mother of all vectors”, it’s a known vector for West Nile virus, several forms of encephalitis, and a long list of other diseases. For those not in the know, encephalitis is a swelling of the brain often caused by a viral infection and has symptoms ranging from aches and fatigue to hallucinations and seizures. It’s not great.

Close up of Culex tarsalis, a species of mosquito that Dr. Dan Peach was the first to confirm is found in Yukon. Photo Credit: Daniel Peach/Journal of the Entomological Society of British Columbia).

But fear not, citizen! While we have mosquitoes in the Yukon that could transmit diseases to people, they don’t and here’s why: In order for mosquito to give you a virus, it needs to be carrying that virus in the first place. Even if the mosquito was carrying a transmittable virus, the virus needs heat to multiply itself enough to the point where it would be too much for the human immune system to deal with. What do we not have in the Yukon? Heat. On the whole, the Yukon is just too chilly for mosquito-born disease to exist let alone thrive. I hope this gives you a feeling of relief as you bask in our -40 C winters.

You see, mosquitoes are diverse in their diets, behaviours, and characteristics, which just helps highlight the fact that the Yukon is wonderfully rich in biodiversity. This is something we should all appreciate even if it applies to insects that sometimes siphon your blood.

References:

Articles

A review of mosquito collecting in the Yukon
Canada’s national mosquito? Mass-resting of Anopheles earli (Diptera: Culicidae) females in a beaver lodge in Alberta

Website

Rutgers: New Jersey agricultural experiment station- Culex territans

Joelle Ingram

Joelle Ingram

Human of Many Talents

Joelle is a former archaeologist, former wildlife interpreter, and a full-time random fact enthusiast. She received her master’s degree in anthropology from McMaster University. One of the four people who read her thesis gave it the glowing review “It’s a paper that would appeal to very specific group of people,” which is probably why only four people have read it. Her favourite land mammal is a muskox, her favourite aquatic mammal is a narwhal. She thinks it’s important that you know that.

867-456-7400
 info@yukonwildlife.ca

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Thinhorn Mountain Sheep

Thinhorn Mountain Sheep

20/12/04 | Thinhorn Sheep

wildlife

by Doug Caldwell | Dec 4, 2020

10 minute read -

For a long time, it was believed that there are three distinct subspecies of thinhorn Mountain Sheep in North America each of these known as: Dall, Fannin and Stone. Each subspecies displayed different colouring of their coats where Dall would be pure white, Fannin would be white with grey, silver and black highlights and Stone sheep were white with brown and black highlights and sometimes predominantly all dark grey.

Thinhorn Mountain Sheep grow one set of horns from youth to old age.  Pictured are two rams (males).  L to R:  Young ram; mature ram.

Recent DNA gathering and analysis has revealed that all three subspecies are actually very much alike and identification of each subspecies is becoming significantly more difficult to confirm as interbreeding continues and identifiable traits or genetic markers blend together to produce a mongrelized modern day specimen.

Further, evolutionary biologists1https://www.ualberta.ca/science/news/2016/june/dna-analysis-rewrites-the-story-of-thinhorn-sheep-during-the-last-ice-age.html studying the lineages of thinhorn sheep have found evidence suggesting that the species diverged hundreds of thousands of years earlier than previously thought. Greatly influenced by the formation, movement and final melting of the glaciers, thinhorn sheep roamed a vast area in search of ice-free grazing areas known as refugia. The mountainous geography often separated groups of similar or same subspecies sheep where through isolation they accumulated some variances between populations over time, sometimes resulting in the formation of what were originally thought to be new subspecies due to variations of their physical appearance.

Genetic science continues to study these animals and new proofs are foreseen to reveal how the present thinhorn sheep populations of the Yukon, BC and Alaska evolved to be what they are today. As genetic scientists work with data gathered by paleontologists, geologists and other scientific disciplines, there is anticipated to be a more accurate understanding of how northern animals evolved into what they are today.

Despite their uniqueness in genes and variations in colour, thinhorn sheep rams share the same impressive set of horns that are admired in the animal kingdom. It is important to note that horns and antlers are not the same. Members of the deer family grow antlers which are shed and grow back each year, while sheep grow horns which are with the animal for all of its life. Also antlers grow from the tips while horns grow from the base.2https://medium.com/usfws/11-facts-about-antlers-18e689fe9e60#:~:text=Bison%2C%20antelopes%2C%20sheep%2C%20goats%20and%20domestic%20cattle%20%E2%80%94,from%20the%20tip%3B%20horns%20grow%20from%20the%20base  It’s a minor thing, but important because if a young sheep breaks off a tip of their horn, it will remain that way for the rest of its life. Female sheep or ewes also grow horns but these are much more diminutive than the male sheeps’ horns.

​ Female sheep or ewes also grow horns but these are much more diminutive than the male sheeps’ horns.

Sheep start to grow their horns shortly after birth and they will continue to grow over their lifespan, sometimes up to 20 years of age.3http://www.env.gov.bc.ca/wld/documents/thinhorn.pdf If you look closely at a ram’s horns you’ll see rings that circle the horn in various locations. These are called growth rings or annuli rings and a new one is formed each year and they are a reliable method to estimate the age of the animal. The horns are made of keratin, which is the same hard material that their hooves are made of and it grows quickly.

The first few inches of horn that a ram grows is called a lamb tip and represents about the first 6 months of the animal’s life,4https://www.adfg.alaska.gov/static/hunting/dallsheephunting/pdfs/dall_sheep_guide_to_judging_sheep_horns_under_full_curl_regulation.pdf it often gets broken off as the ram’s life of fighting and careless use take their toll.

Credit Alaska Department of Fish and Game

Each year a new annuli ring is formed near the base due to stressors the ram experiences, normally associated with the mating season.  You may notice that the space between the annuli rings is not uniform. This reflects the quality of nutrition that the animal experienced during that year of his life. Large wide spaces between the rings indicate good nutritional intake and low stress. Small thinner spaces may indicate a stressful year or a reduction in nourishment possibly associated with long, hard winters, forest fires and a loss of grazing, avoiding predators and similar stressors found in nature. Once the ram reaches a certain age of maturity, at about eight years,5https://www.coniferousforest.com/dall-sheep.htm the horns will continue filling out in thickness and mass, but stop growing longer as time goes on. A mature ram's horns can weigh up to 15 kilos - more than all the bones in his body combined.

The size and shape of ram’s horns are what distinguish it from others and there is a wide variety of shapes, formations and sizes among sheep horns. Some horns form concise symmetric circles that are located close to the animal’s head, while others grow into a cork-screw-like shape where the tips are splayed out from the ram’s head. Some rams have horns that are thicker and longer than others, this is normally associated to a genetic trait of the animal’s ancestors where the influencing genes get passed to subsequent generations.

Hunting organizations such as Boone & Crockett have devised an elaborate measuring system with which to score the horns of most big game animals. The horns are measured at specific locations including the base, the overall length of the horn on each side, the distance between the horn tips and diameters of the horn in four key places. Once these measurements are collected some math is performed to arrive at the score for that ram’s horns. Records are kept by species so that hunters know how their harvested ram compares to others. This record keeping is also valuable for biologists and others to track the various changes in sheep populations around the world and may indicate declines in health, and their supporting environment and other influences which may be indicated by the changing size or condition of their horns.

Regional governments also utilize hunters to gather important data from the field. This is usually done by making it mandatory that certain parts of the harvested animal are submitted to the Game Branch as a condition of the species harvest tag. In this way biologists get to examine a diversity of a certain species all harvested within a quantified period of time and noted locations. Biologists examining sheep submissions here in the Yukon check for a number of important indicators. Yukon regulations require the complete head of a harvested ram be submitted for inspection.6https://yukon.ca/sites/yukon.ca/files/env/env-yukon-hunting-regulations-summary_en.pdf]]

The first thing they examine is if the horns are indeed a full curl as regulations prohibit harvesting a ram that is less than a full curl.

The biologists then extract a tooth to confirm the exact age of the animal by cutting the top off and counting the rings similar to the dendral or age rings of a tree. They may also take a tissue or blood sample to test for various diseases and infections the animals may suffer from. When all the tests have been completed the biologist bores a small hole in the top side of the horn facing the rear and epoxies a serialized aluminum plug into it. These plugs help to combat the underground trade of animal heads by having each head recorded by hunter, date and location.

Having access to all this data helps biologists to better understand the health of the wild sheep herds and may provide clues on where a disease is developing and which way it may be moving geographically.

Photo Credit: Kevin Pepper

Photo Credit: Kevin Pepper

Rams are famous for bashing their horns together to determine which is dominant for breeding purposes, but that is only for a few days each breeding season typically in late November and December. They also use their horns to communicate among themselves in ways that humans can only guess at. They will sometimes interlace their horns gently and rub their ears together which appears to be a welcoming gesture. Like most creatures, mountain sheep use body language to communicate with others. It may be a twisting of the head or extending their noses while they peel their lips back to reveal their teeth, or something as simple as their stance and how they wiggle their ears as they stare at others from a distance. They often grunt at each other as well.

Rams will often gently head-butt  each other as a form of greeting, similar to how a house cat bumps your leg when seeking attention. They can be quite gentle in their horn touching activities or they will get up on their hind legs and really lean into butting another ram with all the force they can muster.

Photo Credit Mark Newman

Photo Credit: Mark Newman

With remarkable muscle tone, balance and coordination mountain sheep demonstrate how well they have adapted to living on rock faces as they frolic and cavort in situations humans try to avoid. Often it will take a human significantly longer to cover a vertical climb it only took a few seconds for the sheep to navigate. Mountain sheep are remarkably strong and have endurance that allows them the energy and stamina to evade predators such as wolves and bears on the uneven and precarious mountain slopes they call home. Young lambs are a popular target for migrating Golden Eagles arriving in the spring season from their over-winter habitats. So sheep must be watching in all directions for potential dangers that could impact on them or their offspring.

Young lambs are a popular target for migrating Golden Eagles.  Ewes must be watching in all directions for potential dangers that could impact them or their offspring.

Mountain sheep have superior eyesight for distance and low-light conditions, they have horizontal pupils that help them to see panoramically to detect predators that could approach from different directions.  They also need to be able to see forward clearly so that they can run over rough terrain. They have excellent peripheral vision and can see behind themselves without turning their heads due to where their eyes are located on their skulls. Remember they need to look around their horns too.

Thinhorn Mountain Sheep are remarkable creatures perfectly adapted to thrive on the mountains of Northwestern Canada and Alaska and will remain a featured megafauna species here at the Yukon Wildlife Preserve.

Ram follows an Ewe closely.

Doug Caldwell

Doug Caldwell

Wildlife Interpreter

Doug is one of the Interpretive Wildlife Guides here at the Preserve. An avid angler and hunter he has a broad knowledge of Yukon’s wilderness and the creatures that live here. With a focus on the young visitors to the Preserve, Doug takes the extra time to help our guests to better appreciate the many wonders of the animal kingdom here in the Yukon.

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Faces of the Preserve: Maureen

Faces of the Preserve: Maureen

20/10/16 | Community Contribution

wildlife

by Julie Kerr and Maureen Peterson | Oct 16, 2020

12 min read -

It takes drive and passion to support a non-profit organization which works to be a living center of Yukon’s wildlife, with informed voices that speak for, and connect others to, the natural world. Who is the team making this happen?

Meet Maureen. She’s a Yukoner with a rich and varied history - just like Yukon Wildlife Preserve. Here she shares what she loves about the Yukon, working as a Wildlife Interpreter, and how that happened in the first place.

“I had always wanted to visit the Yukon. I moved to Whitehorse in 1970 and knew from the start this would be home. In 1973 I moved even further north, to Dawson City, and have spent the next 50 years between the two communities.” As many Yukoners know, successful longevity in the Territory can require versatility; Maureen has this in spades. She joined the team in 2013, drawn to Yukon Wildlife Preserve through a combination of knowledge and understanding of animals, Interpretive experience, and an enjoyment of speaking to people.

Whether in her fox scarf, or her fun moose toque and Covid-19 mask, Maureen helps guests learn about animals.  L to R: Maureen shares knowledge about Wood Bison; Maureen teaches about moose; Guided Bus Tour guest enjoys a close up of Bison while listening to Maureen.

“For 20 years I worked as a commercial fisher(wo)man on Yukon River and Lake Laberge. I spent 30 winters as a trapper, operating from a cabin with no electricity and no running water and 10 years as a placer miner. Finding prehistoric bones while placer mining, that’s very interesting - the most interesting part of placer mining in fact. I have always had an interest in archeology, turns out I had no interest in gold via placer mining! Finding bones:  that's an immediate link to history and the land. Combined, these are years of experience which had me on the land and water, harvesting, observing and getting in tune with nature, the seasons and animals. I learned a lot, during those years, about animal life cycles and respect for animals. I would say I have more appreciation for wild animals because I understand more about how hard life is for them.

I’ve worked for Parks Canada as an Interpreter for 25 summers at sites such as Dredge #4, Bear Creek, Dawson City walking tours and SS Klondike. I’m a Certified Interpretive Guide with the National Association of Interpretation. All those years talking to people, connecting them with history and the Yukon; I bring that to Yukon Wildlife Preserve. My appreciation for and understanding of wildlife, in addition to my skills of observation learned from my years living and harvesting on the land, really assist me in helping to connect our visitors to Yukon species. Specifically, my tracking skills help me observe wild animals in their natural habitats, as well as to understand the story of what I’m watching them do, in that moment. I enjoy sharing those skills and helping visitors learn how to “see” animals that are excellent at camouflage and how to take that beyond their visit to the Preserve, to their lives at home, wherever that is.

Visitors sometimes wonder how my years trapping, hunting and fishing can mean I have a strong appreciation for wild animals. I try to explain that I think I have a greater appreciation because of my experiences, because when you live in the bush, you live closer to the animals. Not only do I think I understand more about how hard life is for wild animals, but I depended on them for sustenance and my livelihood. This has allowed me to acquire a greater appreciation for wildlife. Living this close to nature, while raising a family, allowed me to pass on to my daughter how to observe animals, their natural behaviours and to listen to what their body language and actions are saying, and to then change my behaviour accordingly. We don’t have to speak the same language as animals to hear, and respect, what they are telling us. Humans, we learn that, and I’m pleased to have been able to pass on those teachings to the next generation.

I remember I once had a curious porcupine sit and talk to me, chattering on with its porcupine noises. It was very engaging, although I didn’t understand a word. I finally had to tell the porcupine that I had to leave to do other things that day, and I was the first to leave the conversation.

Trapping and hunting has taught me to pay attention to the animals themselves, and to the signs they leave behind:  tracks, scat. The only way for me to be successful was to observe all these things within a species, and within the area I was harvesting. You have to know your area and the animals on it. You become part of a system when you’re harvesting off the land. You are a predator, and like wild predators, you don’t take all the prey out of your area. As a trapper and subsistence hunter, I participated in a relationship with the land, the animals and the environment; this allowed me to become in tune with the rhythms of life around me. There’s a balance within nature, if we noticed a shift in that balance, then we shifted to accommodate it. Yes, there were parts of this life that were hard and challenging, but it was also rich and rewarding - and very much a lifestyle choice.

I lived 30 years in a cabin in the bush. I stopped trapping and moved back to Whitehorse in 2009, because I like running water and electricity. While I miss the quiet of that life in the bush, well I LOVE the ease of modern life. After so many years without, I don’t take for granted things like lightswitches, kettles, showers or flush toilets. Living without for so long, that’s a hard life. Hauling water, in the winter, by buckets out of a frozen river means chopping holes in the ice with chainsaws or axes, and then doing it again when that hole inevitably refreezes solid. It really puts you in tune with the harsh realities of life and survival; I think it has helped me gain understanding and insight into some of the challenges wild animals face daily. They can’t just flip a switch or push a button and get food or shelter, they have to work hard, and constantly, to be successful in life at acquiring food, territory, shelter and to be successful at breeding and rearing young.

My favourite animal in the wild is the Lynx. They’re cool and simply the most beautiful animal. In the area I lived in the bush, lynx were rare and sightings were very special. Once, I heard a lynx scream. I’ll never forget that sound, or having to keep my dog under control to avoid him going to investigate. Here at the Preserve, my favourite animal is the Muskox. They are survivors and they are stubborn. I respect both those qualities. I’ve been in the Yukon a long time, but I’ve got nothing on the tens of thousands of years of Muskox. They’ve been stubbornly surviving since the last Ice Age.

Visitors to Yukon Wildlife Preserve, they are often curious about more than the animals at the Preserve. I enjoy the opportunity to connect with people of all ages. Some people want to listen, some ask a lot of questions or share their own experiences with me. No matter how or with whom the connection, I enjoy it most when people are interested and open to learning about respectful interactions with wildlife and the land.

Respect, observation, space, quiet, an understanding of the behavioural norms of the different species we can encounter:  this leads to successful interactions with wild animals - safe for us and safe for them. Animals don’t speak human languages, but they don’t need to. Humans can pay attention to the body language of an animal to hear what that animal is saying to us, and if humans don’t know how to do that, we can learn. I try to relate how to do this to visitors to Yukon Wildlife Preserve, and to teach those who are willing to learn.”

Maureen has had guests on her tours ask if she was a schoolteacher. "I was not a teacher.  To me, education sounds like sitting in a classroom. Instead of offering education, I prefer to think that I am helping people learn about the things I know about:  animals."

Maureen is one of a strong community at Yukon Wildlife Preserve and part of a thread that weaves us together. The next time you visit, stop at the Reception Cabin and say hello, or share a story:  you might just learn something new from Maureen. “I hope that after I’ve talked to visitors to the Preserve, that they leave with a little more knowledge and understanding of the wildlife they might encounter. Also, a little more respect for those animals.”

Stories by Maureen Peterson.  Compiled and written by Julie Kerr.

Maureen Peterson

Maureen Peterson

Wildlife Interpreter

Maureen is originally from North Vancouver, BC, where she lived for the first 20 years of her  life. In grade 5 she did a project about the Yukon, which is when she decided to go there. It was at age 20, and the day after she was married, that she finally moved North.  The Yukon was everything the 10 year old Maureen thought it would be and she has never had any desire to move anywhere else.

Julie Kerr

Julie Kerr

Visitor Services Coordinator

Julie is a Registered Veterinary Technologist, living and working in Whitehorse since 2012. She joined the team in May 2018. She is passionate about wildlife, nature and living in a conscious manner with both. Her free time is spent outdoors observing wild animals and ecosystems; her connection to the natural world around her brings great joy – joy she loves to share with anyone interested. Honestly? Work and life blend rather seamlessly.

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