Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies
Meeting energy requirements during the nonbreeding season is important for many animals and some defend winter territories to secure a food supply. In birds of prey, females, the larger and competitively dominant sex, may monopolize areas with higher prey abundance than males. We thus predicted that...
Published in: | Canadian Journal of Zoology |
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Online Access: | http://dx.doi.org/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0280 |
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crcansciencepubl:10.1139/cjz-2017-0280 2023-12-17T10:28:23+01:00 Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies Chang, Alexander M. Wiebe, Karen L. 2018 http://dx.doi.org/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0280 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 96, issue 6, page 545-552 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 2018 crcansciencepubl https://doi.org/10.1139/cjz-2017-0280 2023-11-19T13:38:25Z Meeting energy requirements during the nonbreeding season is important for many animals and some defend winter territories to secure a food supply. In birds of prey, females, the larger and competitively dominant sex, may monopolize areas with higher prey abundance than males. We thus predicted that female Snowy Owls (Bubo scandiacus (Linnaeus, 1758)), which might acquire the high-quality habitats and individuals in better body condition, would be able to persist on smaller home ranges, travel shorter distances, and spend proportionally more time on a home range than males, during the winter. On the prairies in central Saskatchewan, we deployed satellite transmitters on 11 male and 12 female Snowy Owls over two winters. There were no significant differences between the sexes in home-range size or the amount of travelling during the winter months. Mean first home range (95% minimum convex polygon) size was 54.4 km 2 for males, 31.9 km 2 (estimated marginal means) for females, and 53.8 km 2 for the sexes combined. However, within sexes, home-range size was negatively correlated with body condition as predicted. A lack of defense of home-range perimeters against conspecifics could increase variation in home-range size and movement patterns and reduce differences between the sexes. Article in Journal/Newspaper Bubo scandiacus Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 96 6 545 552 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Chang, Alexander M. Wiebe, Karen L. Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Meeting energy requirements during the nonbreeding season is important for many animals and some defend winter territories to secure a food supply. In birds of prey, females, the larger and competitively dominant sex, may monopolize areas with higher prey abundance than males. We thus predicted that female Snowy Owls (Bubo scandiacus (Linnaeus, 1758)), which might acquire the high-quality habitats and individuals in better body condition, would be able to persist on smaller home ranges, travel shorter distances, and spend proportionally more time on a home range than males, during the winter. On the prairies in central Saskatchewan, we deployed satellite transmitters on 11 male and 12 female Snowy Owls over two winters. There were no significant differences between the sexes in home-range size or the amount of travelling during the winter months. Mean first home range (95% minimum convex polygon) size was 54.4 km 2 for males, 31.9 km 2 (estimated marginal means) for females, and 53.8 km 2 for the sexes combined. However, within sexes, home-range size was negatively correlated with body condition as predicted. A lack of defense of home-range perimeters against conspecifics could increase variation in home-range size and movement patterns and reduce differences between the sexes. |
format |
Article in Journal/Newspaper |
author |
Chang, Alexander M. Wiebe, Karen L. |
author_facet |
Chang, Alexander M. Wiebe, Karen L. |
author_sort |
Chang, Alexander M. |
title |
Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
title_short |
Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
title_full |
Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
title_fullStr |
Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
title_full_unstemmed |
Movement patterns and home ranges of male and female Snowy Owls ( Bubo scandiacus ) wintering on the Canadian prairies |
title_sort |
movement patterns and home ranges of male and female snowy owls ( bubo scandiacus ) wintering on the canadian prairies |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
http://dx.doi.org/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/full-xml/10.1139/cjz-2017-0280 http://www.nrcresearchpress.com/doi/pdf/10.1139/cjz-2017-0280 |
genre |
Bubo scandiacus |
genre_facet |
Bubo scandiacus |
op_source |
Canadian Journal of Zoology volume 96, issue 6, page 545-552 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/cjz-2017-0280 |
container_title |
Canadian Journal of Zoology |
container_volume |
96 |
container_issue |
6 |
container_start_page |
545 |
op_container_end_page |
552 |
_version_ |
1785580491123982336 |