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We're continuing our work this winter, learning more about these majestic Arctic predators, but we can't do it without your help. Your donation to Project SNOWstorm is tax-deductible through our institutional home, the Ned Smith Center for Nature and Art in Pennsylvania, a 501(c)(3) nonprofit.
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Read on to explore what Project SNOWstorm does
to better understand and protect this magnificent hunter.
One of the most important elements of our research is understanding the winter ecology of snowy owls, using GPS/GSM transmitters that record the bird's location, altitude and flight speed as frequently as every six seconds. On-board temperature sensors and accelerometers add additional layers of data to help us understand how these birds hunt, migrate and survive both here on their more southerly wintering grounds, and in the Arctic.
In the past eight years we've tracked nearly 100 Snowy Owls from Alaska and the Dakotas to the Great Lakes, New England, southern Canada and the mid-Atlantic, including their summers in the Arctic. Our tracking data has documented previously unknown behavior, and shed light on poorly understood aspects of the snowy owl's life, both in their temperate wintering areas -- the main focus of our work -- as well as their breeding grounds in the North.
We continue to partner with Cellular Tracking Technologies, which supplies the high-tech, next-gen transmitters we use, and whose engineers and staff have been part of our team from the beginning.
In July 2019, we expanded our study of the movements and mortality rates of juvenile snowy owls by tagging six young owls in their nests on Bylot Island in the Canadian Arctic -- a project we piloted in 2018 in Utqiagvik (formerly Barrow), Alaska with our colleagues at the Owl Research Institute. This is one of the very few times fledgling snowies have been tracked anywhere in the world, a critical step to understanding juvenile mortality and movements -- a completely unknown part of their life cycle, and part of an ambitious plan to tag additional juveniles in North America, Greenland and Norway with colleagues in the International Snowy Owl Working Group.
Our plans to continue that work in 2020 and again in 2021 were interrupted by the COVID-19 pandemic, during which field work in the Canadian Arctic was suspended out of concern over spreading the virus to remote communities in the North. We are looking forward to the summer of 2022 with cautious optimism that we can resume this important and exciting research.
Owls and Airports
Because they are flat and treeless, airports are especially attractive to snowy owls -- and especially dangerous. Project SNOWstorm has, from the beginning, worked with airport authorities and federal wildlife agencies to explore ways to better prevent airplane strikes, safeguarding both passengers and owls, as well as assisting in the capture and relocation of snowy owls away from airport to safer, appropriate habitat.
Over the past several years, McGill University Ph.D. student and SNOWstorm core team member Rebecca McCabe has been analyzing tracking and mortality data from 42 snowy owls we have tagged and relocated from 13 airports in the U.S. and Canada. Her findings, which were part of her dissertation, are currently in press with a wildlife management journal, and when published will give airport managers and others important insights into how best to move snowy owls so they stay away from airfields.
Although Dr. McCabe has completed her doctorate, we continue to work with wildlife officials at a number of airports, including Montréal-Trudeau International Airport, where snowy owls trapped and relocated by Falcon Environment will be tagged by Dr. Guy Fitzgérald of the Bird of Prey Clinic of the University of Montréal. Our goal now is to test the conclusions in Dr. McCabe's research and develop proven best practices for such relocations.
Health and environmental risks
Several of the most important elements of Project SNOWstorm take place not in the field but in the lab, where we explore the largely unknown world of snowy owl health, and how the modern landscape they now inhabit places them at new and worrisome risk.
Our team of wildlife veterinarians and pathologists, based at the University of Pennsylvania's New Bolton Center, have necropsied more than 260 Snowy Owls that have been accidentally killed or found dead, and we've tested hundreds of blood samples from live birds captured for banding and tagging -- by far the largest examination of the health and condition of wintering snowy owls ever undertaken.
Some of the findings have been encouraging. We've found, for example, that contrary to long-standing assumptions about snowy owls in winter, most migrant owls are generally in good physical condition, not thin and starving as was once assumed.
But there are reasons for concern. Toxicology tests have shown that most snowy owls carry at least some level of dangerous chemicals in their bodies, from lead to rodenticides (rat poison) to pesticide residues like DDE. Most troubling, many snowy owls have shown significant levels of mercury, an insidious toxin generated by coal-fired power plants and vehicle exhaust, which bioaccumulates through the food chain until it causes behavioral and reproductive problems. Because mercury contamination may be tied to diet (especially the consumption of waterbirds like ducks, gulls and loons), our tracking data is proving valuable in discerning where snowy owls may be experiencing the heaviest exposure.
We're also using DNA samples from owls to explore the genetic structure of North America's snowy owl population, and analyzing stable chemical isotopes in their feathers, blood and tissue to look at questions like their point of origin in the Arctic, and how their diets change over time.
Outreach and education
Everything we do at Project SNOWstorm is shared with the public. All of our tracking maps are available and updated regularly as new transmissions come in, with email alerts and regular blog posts explaining in fascinating detail what we're doing. (The map updates are delayed 24 hours, however, to mask the owl's current position.) We happily cooperate with students and teachers who want to use our data in classroom projects and workshops.
Analysis and publications
Project SNOWstorm's tracking work represents the largest and most diverse set of winter movement data for snowy owls anywhere in the world, and we're drilling down into it to see what it reveals about these Arctic migrants, the habitats they use, and how best to protect and conserve them.
We continue to publish a stream of peer-reviewed scientific articles based on our research, so our findings inform the wider conservation of snowy owls, in such prestigious international journals as Nature, Ornithology, Oecologia and Ibis. In the past year, SNOWstorm data was central to papers covering the winter survival of immature snowy owls; factors associated with the return of translocated owls to airports; whether snowy owls migrating north in spring use stopover periods to sample potential breeding sites; and the influence of landscape cover versus social dominance on snowy owl movement patterns.
We're supporting the post-doctoral work of Dr. Rebecca McCabe as she undertakes a global status assessment of snowy owl populations worldwide -- the first time such an effort has been made, and a critical step in determining conservation action for this species.
Who We Are
In all, there are more than 40 scientists, banders, wildlife veterinarians and pathologists who donate their time and expertise to Project SNOWstorm. Our institutional home, the Ned Smith Center for Nature and Art in central Pennsylvania, is a 501 (c)(3) nonprofit, so your donation to Project SNOWstorm supporting their work is tax-deductible to the extent allowed by law.
These are some of the faces of Project SNOWstorm:
Photo credit: ©Alan Richard - Snowy Owl in flight, and perched shot