Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland

Rough-legged hawks (Buteo lagopus Pontoppidan), a species typically associated with more northerly regions, occurred in unusually high numbers on insular Newfoundland in the summers of 1988 and 1993, and some pairs nested in noncoastal areas on the island in 1993. We suggest that the island is an al...

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Published in:ARCTIC
Main Authors: Whitaker, Darroch M., Montevecchi, William A., Gosse, John W.
Format: Article in Journal/Newspaper
Language:English
Published: The Arctic Institute of North America 1996
Subjects:
Online Access:https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64260
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author Whitaker, Darroch M.
Montevecchi, William A.
Gosse, John W.
author_facet Whitaker, Darroch M.
Montevecchi, William A.
Gosse, John W.
author_sort Whitaker, Darroch M.
collection Unknown
container_issue 3
container_title ARCTIC
container_volume 49
description Rough-legged hawks (Buteo lagopus Pontoppidan), a species typically associated with more northerly regions, occurred in unusually high numbers on insular Newfoundland in the summers of 1988 and 1993, and some pairs nested in noncoastal areas on the island in 1993. We suggest that the island is an alternative breeding ground for the species during years of low prey abundance on the Labrador Peninsula. Our observations concur with hypotheses that rough-legged hawks nomadically search for nesting territories and exploit areas near the limits of their breeding range during such years. Forest clear-cuts were used for foraging by pairs nesting in interior Newfoundland during 1993, which suggests that forest harvesting may have opened new alternative habitats for rough-legged hawks. Un nombre inhabituellement élevé de buses pattues (Buteo lagopus Pontoppidan), une espèce typiquement associée aux régions nordiques, a été observé sur l'île de Terre-Neuve durant les étés de 1988 et 1993, et quelques couples y ont niché dans les régions non côtières en 1993. Ces observations suggèrent que l'île est une aire de nidification alternative pour l'espèce pendant les années où les proies se font rares sur la péninsule du Labrador. Nos observations concourent à l'hypothèse voulant que les buses pattues utilisent différents territoires de nidification et exploitent les régions à proximité des limites de leur aire de nidification pendant les années où les proies se font rares. Les couples nichant dans les régions non côtières de Terre-Neuve en 1993 se sont régulièrement alimentés dans les coupes à blanc, ce qui suggère que l'exploitation forestière pourrait avoir offert de nouveaux habitats alternatifs pour les buses pattues.
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genre_facet Arctic
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op_source ARCTIC; Vol. 49 No. 3 (1996): September: 211–320; 306-310
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spelling ftunivcalgaryojs:oai:journalhosting.ucalgary.ca:article/64260 2025-06-15T14:14:55+00:00 Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland Whitaker, Darroch M. Montevecchi, William A. Gosse, John W. 1996-01-01 application/pdf https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64260 eng eng The Arctic Institute of North America https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64260/48195 https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64260 ARCTIC; Vol. 49 No. 3 (1996): September: 211–320; 306-310 1923-1245 0004-0843 rough-legged hawk Buteo lagopus Pontoppidan breeding distribution clear-cut irruption nomadism Newfoundland predator–prey cycles distribution de la nidification buse pattue coupe à blanc nomadisme Terre- Neuve cycles prédateur-proie info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion research-article 1996 ftunivcalgaryojs 2025-05-27T03:29:43Z Rough-legged hawks (Buteo lagopus Pontoppidan), a species typically associated with more northerly regions, occurred in unusually high numbers on insular Newfoundland in the summers of 1988 and 1993, and some pairs nested in noncoastal areas on the island in 1993. We suggest that the island is an alternative breeding ground for the species during years of low prey abundance on the Labrador Peninsula. Our observations concur with hypotheses that rough-legged hawks nomadically search for nesting territories and exploit areas near the limits of their breeding range during such years. Forest clear-cuts were used for foraging by pairs nesting in interior Newfoundland during 1993, which suggests that forest harvesting may have opened new alternative habitats for rough-legged hawks. Un nombre inhabituellement élevé de buses pattues (Buteo lagopus Pontoppidan), une espèce typiquement associée aux régions nordiques, a été observé sur l'île de Terre-Neuve durant les étés de 1988 et 1993, et quelques couples y ont niché dans les régions non côtières en 1993. Ces observations suggèrent que l'île est une aire de nidification alternative pour l'espèce pendant les années où les proies se font rares sur la péninsule du Labrador. Nos observations concourent à l'hypothèse voulant que les buses pattues utilisent différents territoires de nidification et exploitent les régions à proximité des limites de leur aire de nidification pendant les années où les proies se font rares. Les couples nichant dans les régions non côtières de Terre-Neuve en 1993 se sont régulièrement alimentés dans les coupes à blanc, ce qui suggère que l'exploitation forestière pourrait avoir offert de nouveaux habitats alternatifs pour les buses pattues. Article in Journal/Newspaper Arctic Newfoundland Terre-Neuve Unknown Newfoundland ARCTIC 49 3
spellingShingle rough-legged hawk
Buteo lagopus Pontoppidan
breeding distribution
clear-cut
irruption
nomadism
Newfoundland
predator–prey cycles
distribution de la nidification
buse pattue
coupe à blanc
nomadisme
Terre- Neuve
cycles prédateur-proie
Whitaker, Darroch M.
Montevecchi, William A.
Gosse, John W.
Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title_full Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title_fullStr Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title_full_unstemmed Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title_short Breeding Season Irruptions of Rough-legged Hawks (Buteo Lagopus) on Insular Newfoundland
title_sort breeding season irruptions of rough-legged hawks (buteo lagopus) on insular newfoundland
topic rough-legged hawk
Buteo lagopus Pontoppidan
breeding distribution
clear-cut
irruption
nomadism
Newfoundland
predator–prey cycles
distribution de la nidification
buse pattue
coupe à blanc
nomadisme
Terre- Neuve
cycles prédateur-proie
topic_facet rough-legged hawk
Buteo lagopus Pontoppidan
breeding distribution
clear-cut
irruption
nomadism
Newfoundland
predator–prey cycles
distribution de la nidification
buse pattue
coupe à blanc
nomadisme
Terre- Neuve
cycles prédateur-proie
url https://journalhosting.ucalgary.ca/index.php/arctic/article/view/64260