Breeding Season Irruptions of Rough-legged Hawks (Buteo lagopus) on Insular Newfoundland
ABSTRACT. 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 islan...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.530.4311 2023-05-15T14:19:31+02:00 Breeding Season Irruptions of Rough-legged Hawks (Buteo lagopus) on Insular Newfoundland Darroch M. Whitaker William A. Montevecchi John W. Gosse The Pennsylvania State University CiteSeerX Archives 1996 application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.530.4311 http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.530.4311 http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf text 1996 ftciteseerx 2016-01-08T10:35:00Z ABSTRACT. 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. Key words: rough-legged hawk, Buteo lagopus Pontoppidan, breeding distribution, clear-cut, irruption, nomadism, Newfoundland, predator–prey cycles RÉSUMÉ. Un nombre inhabituellement élevé de buses pattues (Buteo lagopus Pontoppidan), une espèce typiquement associée Text Arctic Newfoundland Unknown Newfoundland |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
ABSTRACT. 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. Key words: rough-legged hawk, Buteo lagopus Pontoppidan, breeding distribution, clear-cut, irruption, nomadism, Newfoundland, predator–prey cycles RÉSUMÉ. Un nombre inhabituellement élevé de buses pattues (Buteo lagopus Pontoppidan), une espèce typiquement associée |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Darroch M. Whitaker William A. Montevecchi John W. Gosse |
spellingShingle |
Darroch M. Whitaker William A. Montevecchi John W. Gosse Breeding Season Irruptions of Rough-legged Hawks (Buteo lagopus) on Insular Newfoundland |
author_facet |
Darroch M. Whitaker William A. Montevecchi John W. Gosse |
author_sort |
Darroch M. Whitaker |
title |
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_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_sort |
breeding season irruptions of rough-legged hawks (buteo lagopus) on insular newfoundland |
publishDate |
1996 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.530.4311 http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf |
geographic |
Newfoundland |
geographic_facet |
Newfoundland |
genre |
Arctic Newfoundland |
genre_facet |
Arctic Newfoundland |
op_source |
http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.530.4311 http://pubs.aina.ucalgary.ca/arctic/Arctic49-3-306.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766291347298320384 |