Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively?
Northern Harrier (Circus cyaneus) nest success was studied in relation to habitat choices and availability from 1980 to 1982 in New Brunswick. Measurements of moisture, vegetation, and visibility at nest sites indicated that harriers most often used wet sites surrounded by cattails, with high visibi...
Published in: | Canadian Journal of Zoology |
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Format: | Article in Journal/Newspaper |
Language: | French |
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Canadian Science Publishing
1985
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Online Access: | http://dx.doi.org/10.1139/z85-071 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-071 |
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crcansciencepubl:10.1139/z85-071 2023-12-17T10:28:52+01:00 Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? Simmons, Robert Smith, P. C. 1985 http://dx.doi.org/10.1139/z85-071 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-071 fr fre Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Zoology volume 63, issue 3, page 494-498 ISSN 0008-4301 1480-3283 Animal Science and Zoology Ecology, Evolution, Behavior and Systematics journal-article 1985 crcansciencepubl https://doi.org/10.1139/z85-071 2023-11-19T13:38:31Z Northern Harrier (Circus cyaneus) nest success was studied in relation to habitat choices and availability from 1980 to 1982 in New Brunswick. Measurements of moisture, vegetation, and visibility at nest sites indicated that harriers most often used wet sites surrounded by cattails, with high visibility. Moisture and vegetation had a significant effect on nest success (p < 0.03), while visibility played no significant role. Discriminant analysis indicated that of the three variables, moisture was consistently the best predictor of nest success over 3 years (≥ 64%). Paradoxically, the order of settling by females was weakly correlated with the quality of nest sites in these years, yet choice was not limited by availability. We suggest, therefore, that nest site selection was a compromise between a wet nest site, close proximity to optimum foraging habitat, and, for females, access to a mate with a high food provisioning rate. Article in Journal/Newspaper Circus cyaneus Canadian Science Publishing (via Crossref) Canadian Journal of Zoology 63 3 494 498 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
French |
topic |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics Simmons, Robert Smith, P. C. Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
topic_facet |
Animal Science and Zoology Ecology, Evolution, Behavior and Systematics |
description |
Northern Harrier (Circus cyaneus) nest success was studied in relation to habitat choices and availability from 1980 to 1982 in New Brunswick. Measurements of moisture, vegetation, and visibility at nest sites indicated that harriers most often used wet sites surrounded by cattails, with high visibility. Moisture and vegetation had a significant effect on nest success (p < 0.03), while visibility played no significant role. Discriminant analysis indicated that of the three variables, moisture was consistently the best predictor of nest success over 3 years (≥ 64%). Paradoxically, the order of settling by females was weakly correlated with the quality of nest sites in these years, yet choice was not limited by availability. We suggest, therefore, that nest site selection was a compromise between a wet nest site, close proximity to optimum foraging habitat, and, for females, access to a mate with a high food provisioning rate. |
format |
Article in Journal/Newspaper |
author |
Simmons, Robert Smith, P. C. |
author_facet |
Simmons, Robert Smith, P. C. |
author_sort |
Simmons, Robert |
title |
Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
title_short |
Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
title_full |
Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
title_fullStr |
Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
title_full_unstemmed |
Do Northern Harriers ( Circus cyaneus ) choose nest sites adaptively? |
title_sort |
do northern harriers ( circus cyaneus ) choose nest sites adaptively? |
publisher |
Canadian Science Publishing |
publishDate |
1985 |
url |
http://dx.doi.org/10.1139/z85-071 http://www.nrcresearchpress.com/doi/pdf/10.1139/z85-071 |
genre |
Circus cyaneus |
genre_facet |
Circus cyaneus |
op_source |
Canadian Journal of Zoology volume 63, issue 3, page 494-498 ISSN 0008-4301 1480-3283 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/z85-071 |
container_title |
Canadian Journal of Zoology |
container_volume |
63 |
container_issue |
3 |
container_start_page |
494 |
op_container_end_page |
498 |
_version_ |
1785581108186841088 |