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- Title
Are there changes in morphometrics of migratory juvenile Rough-legged Hawks (Buteo lagopus) in north-central North America?
- Authors
Rosenfield, Robert N.; Evans, David L.; Wiens, Terry P.; Frater, Paul N.
- Abstract
Global rising temperatures due to recent climate change have been linked to long-term reductions in body mass and wing chord in migratory birds, including raptors. The Arctic is experiencing higher temperatures compared to the global mean and such high-latitude increases could influence the morphometrics of the tundra-breeding Rough-legged Hawk (Buteo lagopus). Linear regression models showed no statistically significant changes in body mass or wing chords in migratory juvenile male and female Rough-legged Hawks captured and banded across 48 years at Duluth, Minnesota, 1973–2020. Captures of Rough-legged Hawks at our migration stations provided a relatively expedient means by which to monitor possible climate-induced long-term changes in morphometrics of an Arctic species that is difficult to sample in inaccessible tundra settings.
- Subjects
ARCTIC regions; DULUTH (Minn.); TUNDRAS; MORPHOMETRICS; HAWKS; MIGRATORY birds; CLIMATE change; GLIDING &; soaring; BIRDS of prey
- Publication
Wilson Journal of Ornithology, 2022, Vol 134, Issue 1, p138
- ISSN
1559-4491
- Publication type
Article
- DOI
10.1676/21-00046