Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders
CAPSULE: Rock Ptarmigan place their nests adjacent to boulders, in their lee and on their sunnier aspects. AIMS: To investigate the proximity and orientation of Rock Ptarmigan nests in relation to boulders and vegetation height. METHODS: The distances from boulders of 61 Rock Ptarmigan nests and 60...
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Online Access: | http://hdl.handle.net/1885/12996 https://doi.org/10.1080/00063657.2015.1006163 |
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ftanucanberra:oai:openresearch-repository.anu.edu.au:1885/12996 2024-01-14T10:10:13+01:00 Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders Rae, Stuart http://hdl.handle.net/1885/12996 https://doi.org/10.1080/00063657.2015.1006163 unknown Taylor & Francis 0006-3657 http://hdl.handle.net/1885/12996 doi:10.1080/00063657.2015.1006163 © 2015 British Trust for Ornithology Bird Study Journal article ftanucanberra https://doi.org/10.1080/00063657.2015.1006163 2023-12-15T09:37:36Z CAPSULE: Rock Ptarmigan place their nests adjacent to boulders, in their lee and on their sunnier aspects. AIMS: To investigate the proximity and orientation of Rock Ptarmigan nests in relation to boulders and vegetation height. METHODS: The distances from boulders of 61 Rock Ptarmigan nests and 60 random points were compared. Orientation variables of nests from boulders were analysed with circular statistical formulae. RESULTS: Rock Ptarmigan nests were closer to boulders than random points. The mean orientation of nests relative to adjacent boulders was south-east and the prevailing wind was westerly. Vegetation height at nest sites was taller than at randomly selected sites. CONCLUSION: Rock Ptarmigan which nest next to, in the lee of, and on the south-eastern aspects of boulders, probably gain advantages of protection from the prevailing wind and passive thermoregulation from solar heat. Article in Journal/Newspaper rock ptarmigan Australian National University: ANU Digital Collections Bird Study 62 2 185 189 |
institution |
Open Polar |
collection |
Australian National University: ANU Digital Collections |
op_collection_id |
ftanucanberra |
language |
unknown |
description |
CAPSULE: Rock Ptarmigan place their nests adjacent to boulders, in their lee and on their sunnier aspects. AIMS: To investigate the proximity and orientation of Rock Ptarmigan nests in relation to boulders and vegetation height. METHODS: The distances from boulders of 61 Rock Ptarmigan nests and 60 random points were compared. Orientation variables of nests from boulders were analysed with circular statistical formulae. RESULTS: Rock Ptarmigan nests were closer to boulders than random points. The mean orientation of nests relative to adjacent boulders was south-east and the prevailing wind was westerly. Vegetation height at nest sites was taller than at randomly selected sites. CONCLUSION: Rock Ptarmigan which nest next to, in the lee of, and on the south-eastern aspects of boulders, probably gain advantages of protection from the prevailing wind and passive thermoregulation from solar heat. |
format |
Article in Journal/Newspaper |
author |
Rae, Stuart |
spellingShingle |
Rae, Stuart Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
author_facet |
Rae, Stuart |
author_sort |
Rae, Stuart |
title |
Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
title_short |
Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
title_full |
Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
title_fullStr |
Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
title_full_unstemmed |
Strategic placement of Rock Ptarmigan Lagopus mutanests adjacent to boulders |
title_sort |
strategic placement of rock ptarmigan lagopus mutanests adjacent to boulders |
publisher |
Taylor & Francis |
url |
http://hdl.handle.net/1885/12996 https://doi.org/10.1080/00063657.2015.1006163 |
genre |
rock ptarmigan |
genre_facet |
rock ptarmigan |
op_source |
Bird Study |
op_relation |
0006-3657 http://hdl.handle.net/1885/12996 doi:10.1080/00063657.2015.1006163 |
op_rights |
© 2015 British Trust for Ornithology |
op_doi |
https://doi.org/10.1080/00063657.2015.1006163 |
container_title |
Bird Study |
container_volume |
62 |
container_issue |
2 |
container_start_page |
185 |
op_container_end_page |
189 |
_version_ |
1788064851170426880 |