The Humble Dzäna

The Humble Dzäna

The Humble Dzäna

8 minute read –

When welcoming folks to the Yukon Wildlife Preserve, us interpreters in the Front Cabin often say something along the lines of “you’ll find 10 Yukon animals here,” referring to the ones in our care and pictured on our map. But of course, so many other animals call the Preserve home too. Like the tsäl (sik sik/gopher/arctic ground squirrel) who are the 11th unofficial species that you can find above ground only in the spring and summer!

Another newer resident on the Preserve are the dzäna (muskrats). A mansion of a muskrat lodge has emerged in the moose pond over the past year and has remained visible even when covered by snow this winter! While guiding a bus tour recently, this seemling isolated home became the center of attention while we were looking for the elusive kanday (moose). The visitors and I mused “how many muskrats are in that thing?!” I did know a pair of muskrats had moved into the marsh a couple of years ago, and now maybe there’s a whole family living there hosting many parties (yes, I had to force that line so I can say that a group of muskrats are called a “party”). 

But while joking on my tour, I realised that I did not know much about this animal and this inspired me to dedicate some time to the humble muskrat.  

Muskrat copyright and photo credit: Derald-Lobay

Muskrats are often confused with tsà’ (beavers), and though they are very similar, they are not closely related at all. This is a neat example of convergent evolution: two animals may end up looking the same and acting in similar ways because of the shared environment that they live in. Both muskrats and beavers are semi-aquatic rodents, have water-resistant brown and sleek fur, build their lodges in shallow water or along the water’s edge, and forage on the surrounding plants.

When I told my partner that I was writing about muskrats, he made sure that I was including the story of muskrat’s heroic act. Growing up in Manitoba, we both learned about the special place the muskrat holds in Cree and Anishinaabe Creation stories.

Small details can vary with the storyteller but muskrat’s role remains the same. 

As written in his book Ojibway Heritage, elder Basil H. Johnston from Wasauksing First Nation begins the story with the Great Flood, where only the birds and water animals survived and Sky Woman came to rest on the back of a turtle. She asked the water animals to dive to the bottom and collect soil so that she can create land. Many animals – the loon, the mink, the beaver – dove down, down, down but none returned with soil. All seemed hopeless. Finally, the little muskrat softly said “I’ll go.” Everyone laughed as there was no way the tiny muskrat could make it to the bottom when all of the other animals had failed. Despite being ridiculed, the determined muskrat disappeared into the water and was gone for a long time. The animals and Sky Woman stared helplessly into the water until muskrat finally floated to the surface. Sky Woman lifted muskrat’s body onto the turtle and there, clutched tightly in muskrat’s paw, was a small clump of Earth. She took the Earth and spread it on the back of the turtle. The wind began to blow while Sky Woman and the animals danced together, spreading the Earth farther until it grew into Turtle Island. The animals celebrated and mourned together for without muskrat’s great sacrifice, Earth and all life would not exist. I personally like the story ending with Sky Woman breathing life back into muskrat’s little body so that he can celebrate too.

A traditional Anishinabe inspired Painting by: Carl Ray (1943 – 1979) of a muskrat. The Muskrat reminds us to be open to the creative possibilities of living in balance with Creation.

This story intertwines many moral and ethical values tied together with ecological knowledge. Muskrats are indeed very small, weighing only 2-to-4 pounds compared to the much larger 40-to-70 pound beavers. They are incredible swimmers and can dive underwater for 15-20 minutes at a time. When they dive, their heart rate slows and their body temperature plummets to help them conserve oxygen. Small hairs between their toes and their long, rat-like tail helps to propel them through the water. These are all helpful adaptations when you need to forage for plants and food all winter since muskrats do not store food like beavers. It’s no wonder that the small but mighty muskrat could swim to the bottom of the water with all of these traits.

Instead of building dams and lodges made from felling trees like beavers, muskrats build their lodge homes and feeding huts (called push-ups) out of plants like cattails, sedges, and reeds, packed together with mud. As in the story, their front paws are small with long claws for digging and holding building material, and their homes are shaped like the ball of Earth they held on to.

a brown blob of earth pushes up through the snowy icy surface of the moose habitat pond where a muskrat makes its home. Photo Credit; Rebecca Carter.

A brown blob of earth pushes up through the snowy icy surface of the moose habitat pond where a muskrat family makes its home. Photo Credit: Rebecca Carter.

In the winter, you may see push-ups on frozen ponds and lakes. When the water begins to freeze, muskrats will chew a hole in the ice and push up clumps of material, creating an enclosed and insulated resting hut on top of the ice. Like ice fishing shacks on a lake, muskrats can pop out of the water and take a break from swimming long distances, have some lunch and take a breather all while staying protected from the harsh elements and predators.

These push-ups are also fast frozen piles of fresh plants that offer higher levels of protein, nitrogen, and other nutrients that are lacking in the low quality winter plants. These push-ups are great food sources for caribou, moose and bison and may help them make it through the winter with a nutrient boost. In the summer, waterfowl and marsh birds lounge and nest on the lodges, while snakes and reptiles use the muskrat tunnels and homes for places to rest and thermoregulate. I can’t help but think of muskrat’s desire and determination to help collect Earth as a parallel to the muskrat’s push-ups and lodges for providing food and shelter for other animals throughout the year.

a brown blob of earth pushes up through the snowy icy surface of the moose habitat pond where a muskrat makes its home. Photo Credit; Rebecca Carter.

Fall, muskrat pushup with birds soaring above the pushup. Photo credit: Britt Forsythe.

Muskrats are also resilient and adaptable. They can have 2-3 litters per year with an average of 6 kits per litter making their population relatively resistant to disease, predation pressures, and they can survive through drought years by eating a variety of foods and getting water from the plants. Despite this resilience, there is emerging evidence that muskrat populations are declining across North America. The exact cause remains unclear for these declines, but a loss of critical wetland habitats and the connectivity between wetlands may have a large impact on populations.

I read this quote from elder Benton Banai that is fitting here:

 “No matter that marshes have been drained and their homes destroyed in the name of progress, the muskrats continue to grow and multiply. The Creator has made it so muskrats will always be with us because of the sacrifice that our little brother made for all of us many years ago when the Earth was covered with water.”

Muskrats play such an important role in the ecology of wetlands, Indigenous cultures and economic importance for trappers that we cannot overlook the muskrats and their habitat needs. One of the values that we can learn from the Creation story is that humans and animals are interconnected and living together harmoniously ensures the survival of all. 

Pushup from a muskrat in the Preserve's Moose Pond with a wide view of the land including snowy mountains and boreal forest. Photo Credit; Rebecca Carter.

From the muskrat, we can learn to be determined and courageous when faced with a seemingly impossible task, to cooperate and help one another, to do acts not for the recognition but because it is the right thing to do, and to honour and respect all creatures regardless of their size. So the next time you visit the Wildlife Preserve, see if you could spot the small, humble, determined dzäna in the marsh. We can and do have a lot to learn from our wildlife companions.

References

Department of Environment. 2024. Common Muskrat. Yukon Government, Department of Enivronment. https://yukon.ca/en/common-muskrat

Errington, P.L. 1939. Reaction of muskrat populations to drought. Ecology, 20(2): 168-186. 

Hindle, A.G., et al. 2006. Body cooling and the diving capabilities of muskrats (Ondatra zibethicus) A test of the adaptive hypothermia hypothesis. Comparative Biochemistry and Physiology, 114: 232-241. https://sci-hub.se/10.1016/j.cbpa.2006.03.001 

Hinterland Who’s Who. 1986. Muskrat. Environment and Climate Change Canada, Canadian Wildlife Federation. https://www.hww.ca/en/wildlife/mammals/muskrat.html

Jung, T.S., Stotyn, S.A., and Larter, N.C. 2019. Freezer meals: comparative value of muskrat (Ondatra zibethicus) push-ups as late-winter forage for a northern ungulate. European Journal of Wildlife Research, 65:61.https://doi.org/10.1007/s10344-019-1301-7

MacGregor, D. 2013. Teachings from the Muskrat. Muskrat Magazine. https://muskratmagazine.com/teachings-from-the-muskrat/

Sadowski, C., & Bowman, J. 2021. Historical surveys reveal a long-term decline in muskrat populations. Ecology and Evolution, 11(12): 7557-7568. https://doi.org/10.1002/ece3.7588

Yukon Native Language Centre. 2002. Southern Tutchone Noun Dictionary. Retrieved from: https://ynlc.ca/

Rebecca Carter

Rebecca Carter

Senior Wildlife Interpreter

Rebecca joined the Wildlife Preserve in the summer of 2020 after moving from Manitoba to the beautiful and wild Yukon. Rebecca earned a degree in Biology with honours from the University of Winnipeg studying behaviour in mule deer (one of her top 20 favourite animals.. it’s hard to choose!). She loves connecting with others through nature and sharing stories and knowledge about the animals at the preserve with visitors.

867-456-7400
rebecca@yukonwildlife.ca

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Carmacks Juvenile Bald Eagle Recovery

Carmacks Juvenile Bald Eagle Recovery

Carmacks Juvenile Bald Eagle Recovery

2.5 minute read – 

On November 27th another juvenile bald eagle made it way back to the wild, eagerly. A public release occurred with a very small group helping send it off. 

mature bald eagle in rehabilitation

On November 9th, A juvenile bald eagle was found struggling, entangled in barbed wire fencing in Carmacks. It was found thanks to Bob’s dogs, who alerted him of the eagle stuck. Bob is a resident of Carmacks and would not have noticed the bird, behind a large shed, had it not been for his dogs. He managed to remove the bird from the fencing. He dropped to the ground and wasn’t flying away after free. Bob approached it again and noticed it was shivering and lethargic. 

Old crow bald eagle upon arrival and admittance into the Wildlife Rehabilitation Centre at the Preserve. May 10th. Photo credit L.Caskenette

Bob called local Conservation Officer, Blake Vandecamp who eventually had the bird brought into care of the Wildlife Preserve’s Wildlife Rehabilitation Centre. 

Old crow bald eagle upon arrival and admittance into the Wildlife Rehabilitation Centre at the Preserve. May 10th. Photo credit L.Caskenette

The eagle weighed only 4kg and had some minor laceration injury to the wing and some swelling in the feet (likely due to the talons being caught up in the fencing. Like the Dawson City eagle, it was very happy to eat, and successfully captured live quail. Shortly before release the bird weighed 5.2kg. 

The choice to release it more locally was for a few reasons, including it being a juvenile and underweight possibly indicating unsuccessful hunting in the area it was found. While we generally try to rerelease in the location found, during winter we have elected to release where there are other known successful groups of eagles. 

On November 27th, 2024, at 5.2kg in weight and less than a month in our care, the juvenile bald eagle was returned to the wild, at Chasàn Chùa (McIntyre Creek). Further, transport of an eagle long distances can be challenging due to limited personal to arrange this and it can add additional stress to the bird that we want to avoid if possible. While we are helping the animal while in our care, the animal doesn’t necessarily see it this way and it can be a stressful time. Just consider how you feel when you’re out of your comfort zone, your regular routines interrupted and you’re in an unfamiliar place while also  possibly sick or injured. 

Several groups of bald eagle, mostly mature but a few immature are seen right near the release location. 📸L.Caskenette

Help us get them back on their wings. We could use your help. If you are able to support the care of these two animals, please consider donating. Every contribution makes a difference and as a non-profit charitable organization, you can receive a charitable tax receipt for your support. 

Photo credit: 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 Lynx With a Legacy

A Lynx With a Legacy

A Lynx With a Legacy

6 minute read

The Yukon Wildlife Preserve is deeply saddened to announce the passing of its beloved male lynx on Saturday, November 9th. This exceptional animal, who joined the Preserve’s collection in 2010, was a symbol of resilience and scientific importance, leaving behind a legacy that will not be forgotten.

JB- Moose First Day May 26th, 2014 - Justine Benjamin

Photo credit: L.Caskenette 2018

Born in the wild in 2008, the male lynx’s early life was marked by an unfortunate accident during a research project in the Edmonton, Alberta area. The injury required the amputation of his back left leg, a traumatic event that ultimately led to his rescue and relocation to the Yukon Wildlife Preserve. For the first eight years of his time at the Preserve, he remained behind the scenes, away from the public eye, while another male lynx, who had been part of the collection, cohabited with the other lynx.

female, moose, snow, YWP - Whitehorse - Yukon JB the rehabilitated moose. Jake Paleczny

Photo credit: Jake Paleczny

The passing of this other male lynx, who lived to almost 21 years of age, in December 2017, allowed for the three-legged lynx to join the female lynx, and he quickly became a well-known and cherished resident of the Preserve. His unique physical appearance, the result of his injury, made him stand out as a symbol of adaptability and strength.

Male lynx photo taken 2013. Born in Summer 1997 died December 2017.

Photo credit: Jake Paleczny Male lynz born in 1997. Died in December of 2017. 

But the three-legged lynx was not only special because of his physical traits—his genetics were also extraordinary. His wild origins made him an invaluable member of the Species Survival Plan (SSP) program, where he was recognized for contributing genetically to the broader conservation effort for Canada lynx. As part of an ambitious scientific study in 2018, the Yukon Wildlife Preserve facilitated the mapping of this lynx’s genome in collaboration with the University of Toronto. This groundbreaking research provided insights into chromosome structure in mammals and offered important data for comparing the Canada lynx to the highly endangered Iberian lynx, helping to resolve scientific controversies surrounding the phylogenetic classification of this cat species.

Photo Credit : Ami Vitale National Geographic  Male lynx summer 2024 three legged rescue lynx

Summer 2024. Photo credit: Ami Vitale National Geographic

Despite his distinct genetic heritage, the lynx’s time at the Preserve also had challenges. Although he made several attempts to breed with both the 2009 and 2014 female lynx, no successful litters were produced. Tragically, the one litter born to the older female lynx in 2021 did not survive. Despite these setbacks, the male lynx’s contributions to both the Preserve’s mission and scientific research were invaluable.

Photo Credit : Ami Vitale National Geographic  Male lynx summer 2024 three legged rescue lynx

Summer 2024. Photo credit: Ami Vitale National Geographic

The loss of this remarkable animal is a bittersweet moment for the team at the Yukon Wildlife Preserve. His resilience, both in the face of adversity and throughout his life, will be remembered by all who had the privilege of caring for him.

Taken November 5 2024. Photo credit: L.Caskenette

The Yukon Wildlife Preserve remains committed to preserving and protecting wildlife, and will continue to honor the legacy of this exceptional lynx as part of its broader conservation efforts. As we learn more from the necropsy details we will share. 

• • •

In 2017/2018 The Centre for Applied Genomics (TCAG), at The Hospital for Sick Children, and University of Toronto connected with the Preserve to ask for support to study chromosome structures in animals. As apart of the Canada 150 celebrations as well the genome mapping of several iconic Canadian speciesm including first a beaver, were completed. A blood sample was provided by our three legged lynx.

The karyotype (chromosome complement) of this resident Canada Lynx, was determined to be 38, XY (see picture). Having 38 chromosomes of the ascribed size is identical to that found in the domestic cat, indicating close relationship. The presence of a X- and a Y-chromosome confirmed the sex of the animal, as a male.

Background

The Centre for Applied Genomics (TCAG), at SickKids is headed by Stephen Scherer who is a recognized expert in the field of neurogenomics. Neurogenomics combines classical neurobiology (study of the brain) with the study of the genome (our genetic material) in the context of disease, such as Autism. The human genome is represented by a string of 4 chemical bases, over 3 billion bases long that is found in each cell of the body. The precise order or the sequence of these four chemical bases constitutes the organism’s genome, which defines who and what the organism is, whether it is a cat, a bird, or a tree etc. Essentially, the genome is the organism’s blueprint that is inherited to future generations. It is not hard to imagine that changes in the order of these bases in the genome could give rise to disease. In fact, most cancers are due to such changes, either due to plain bad luck or from exposure to chemicals or radiation and the like.

The technology exists to determine the “sequence” of the genome to give a heads up on disease or treatment. Scientists are in the era of the “$1,000 genome” a term coined by the marketing people. SickKids is the largest genome sequencing centre in Canada and they “sequence” about 10,000 patient genomes a year. You would recall the Human Genome is 3 billion bases long. But in order to produce a genome for only $1,000, the sequencing machine reproduces a patient’s genome as tiny low cost pieces, 400 million of them in fact, with each piece only about 300 bases long. These highly fragmented pieces of the genome are useful only because we already sort of know what the human genome looks like. These pieces are mapped individually onto the official “Human Reference Genome” and the differences between the two sequences (i.e. bases that are different, missing, or extra bases inserted when compared to the mapped position on the Human Reference Genome) are tabulated to produce a list of “mutations” for each patient. The current (2017 reference) official “Human Reference Genome” took nearly 15 years to build from scratch (from little pieces) at a cost of more than $US 3 billion dollars, paid for by the US government and various philanthropic organizations. This reference-based mapping method for genome sequencing works, and many human disease-causing mutations have been identified in this way.

So what is the problem?

The problem is that sequencing a patient’s genome by mapping and comparing short segments against the Human Reference Genome will not identify all the mutations. Many regions of a patient’s genome could be so different from the Reference Genome such that many short pieces derived from patient would not map at all; hence, large segments of the patient’s genome are not amenable to analysis. They estimate about 50% of mutations are missed. To get at all the mutations, they would need to move away from the current mapping approach and reconstruct the patient’s entire genome from the little pieces from scratch. This is process is called “de novo sequencing” (new or from scratch) and is similar to how the original Human Reference Genome was constructed. The trick is that, unlike the creation of the Human Reference Genome, we cannot take 15 years and $3 billion dollars to assemble the genome of each patient.

So what are we doing?

We are now working on methods to perform de novo sequencing and genome assembly there are fast and cheap. To perfect de novo sequencing in an unbiased manner, we used a genome that previously had not been sequenced before. This was one of the reasons why we sequenced and assembled the Canadian Beaver Genome early this year. Other reasons, but just as important: it was Canada’s 150 anniversary and the beaver was not only named after Canada (Castor canadensis), but it had played an important role in the founding of this country; it was great for educational and environmental outreach; and finally, we want to beat an American group who wished to sequence the genome of their beaver football team mascot. At the end, we decisively won the Beaver Genome Race and our paper was published in Feb this year (See attached). We even made the cover of the journal, and had great response form the media.

Why the Lynx?

Despite the good progress made on the de novo sequencing of the beaver genome, the process is still too expensive for routine use at the hospital. We have new ideas on how to make the process better and cheaper. Hence, we need another un-sequenced genome to test the system. Moreover, the beaver genome was so well received; we decided to perform de novo sequencing and assembly of up to ten or more notable animal, bird, fish or plant in the next couple of years. The actual number we would do would depend on how low we can drive the price down. The short list of candidates include the organisms that are named after Canada (there are over eighty of them), have notable ties with Canada, or have compelling scientific rationale.

This is where the Canada Lynx (Lynx canadensis) comes in. No one had sequenced a Canada Lynx so far. From a scientific perspective, a Canada Lynx genome sequence would address a lot of the controversies relating to the phylogenetic assignments of this branch of the cat family, and it would also allow a detail comparison with the recent published genome of the highly endangered Ilberian lynx. Finally, the lynx has considerable public appeal. To push the technical envelope, we aim to sequence and assemble the Lynx genome at less half the cost of beaver genome whilst keeping the quality at the same level. Eventually, we would arrive at an efficient and cost-effective process for clinical use.

The lynx and hare were perfect Canadian canditaed to kickstart the project. 

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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Dawson City Bald Eagle

Dawson City Bald Eagle

Dawson City Bald Eagle

1 minute read – 

Imagine a bald eagle walking around, it’s like the fierce sky warrior forgot its wings. When it’s on the ground, its swagger is… questionable. Instead of the majestic glide we all picture, it’s more like a grumpy grandpa strutting through the yard, a bit hunched, stepping carefully as if it’s got somewhere important to be. It’s as if it’s trying hard to act casual, but can’t quite hide the fact that it’s totally out of its element. You just know it’s thinking, “I’m supposed to be flying right now…”

mature bald eagle in rehabilitation

On October 18th, we admitted a juvenile bald eagle into the Wildlife Rehabilitation Centre. The young eagle came all the way from Dawson City. Apparently, this bird was found struttin’ its stuff on the main street sidewalk of DC. This bird certainly was supposed to be flying but due to being slightly underweight, 4.4kg, not fueled well and muscles not strong enough, it was flightless. Damage to the tail feathers suggest it spent a fair amount of time, flightless. 

Old crow bald eagle upon arrival and admittance into the Wildlife Rehabilitation Centre at the Preserve. May 10th. Photo credit L.Caskenette

The eagle spent one week inside, eating well and gaining weight. The second week in care and until her release she is working on her flight hours, gaining strength before going back to the wild. 

On November 7th, 2024, at 6kg in weight and less than a month in our care, the juvenile bald eagle was returned to the wild, at Chasàn Chùa (McIntyre Creek). she was not transported back to Dawson City for the release.  This added travel can be stressful and Dawson City in the winter can be a challenging place for a young eagle to succed. 

Help us get them back on their wings. We could use your help. If you are able to support the care of these two animals, please consider donating. Every contribution makes a difference and as a non-profit charitable organization, you can receive a charitable tax receipt for your support. 

Photo credit: 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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Bonaparte’s Gull Release

Bonaparte’s Gull Release

Bonaparte’s Gull Release

4 minute read – 

A Bonaparte’s gull was brought into the Wildlife Rehabilitation Centre at the Yukon Wildlife Preserve after it was found flightless on the side of the road. The bird has no significant injuries, some feather damage and was likely concussed. A short time in the centre to recover, eat fish and get strong meant a successful release of the animal to Tàa’an Män — Lake Laberge on the traditional territory of the Ta’an Kwach’an Council.

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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