Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick
Nesting biology and duckling survival of Greater Scaup (Aythya marila) at Grassy Island on the Saint John River in southern New Brunswick were compared between 1995 and 1996. Grassy Island in New Brunswick is an area that is notably removed from other scaup breeding areas, being located farther sout...
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ftjcfn:oai:canadianfieldnaturalist.ca:article/1001 2023-05-15T15:34:47+02:00 Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick Tatman, Nicole M. McRoberts, Jon T. Smith, W. Andrew Ballard, Warren B. Kehoe, F. Patrick Dilworth, Timothy G. 2009-10-01 application/pdf https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001 https://doi.org/10.22621/cfn.v123i4.1001 eng eng The Ottawa Field-Naturalists' Club https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001/1005 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001 doi:10.22621/cfn.v123i4.1001 The Canadian Field-Naturalist; Vol. 123 No. 4 (2009); 323-328 0008-3550 Greater Scaup Aythya marila nest success duckling survival New Brunswick info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2009 ftjcfn https://doi.org/10.22621/cfn.v123i4.1001 2021-09-02T18:54:12Z Nesting biology and duckling survival of Greater Scaup (Aythya marila) at Grassy Island on the Saint John River in southern New Brunswick were compared between 1995 and 1996. Grassy Island in New Brunswick is an area that is notably removed from other scaup breeding areas, being located farther south from main breeding areas in North America. The Mayfield estimates of nest success were 61% and 21% in 1995 and 1996, respectively. Mean daily survival rates were 0.99 in 1995 and 0.96 in 1996 and were significantly different (t = 4.86, P < 0.001). Duckling survival was estimated to range from 38 to 54% in 1995, and was 8% in 1996. The lower breeding success in 1996 may have been due to factors associated with decreased temperatures and increased precipitation, but the fact that the breeding location is atypical to other Greater Scaup breeding areas should not be overlooked. Article in Journal/Newspaper Aythya marila greater scaup The Canadian Field-Naturalist (E-Journal) The Canadian Field-Naturalist 123 4 323 |
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Open Polar |
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The Canadian Field-Naturalist (E-Journal) |
op_collection_id |
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language |
English |
topic |
Greater Scaup Aythya marila nest success duckling survival New Brunswick |
spellingShingle |
Greater Scaup Aythya marila nest success duckling survival New Brunswick Tatman, Nicole M. McRoberts, Jon T. Smith, W. Andrew Ballard, Warren B. Kehoe, F. Patrick Dilworth, Timothy G. Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
topic_facet |
Greater Scaup Aythya marila nest success duckling survival New Brunswick |
description |
Nesting biology and duckling survival of Greater Scaup (Aythya marila) at Grassy Island on the Saint John River in southern New Brunswick were compared between 1995 and 1996. Grassy Island in New Brunswick is an area that is notably removed from other scaup breeding areas, being located farther south from main breeding areas in North America. The Mayfield estimates of nest success were 61% and 21% in 1995 and 1996, respectively. Mean daily survival rates were 0.99 in 1995 and 0.96 in 1996 and were significantly different (t = 4.86, P < 0.001). Duckling survival was estimated to range from 38 to 54% in 1995, and was 8% in 1996. The lower breeding success in 1996 may have been due to factors associated with decreased temperatures and increased precipitation, but the fact that the breeding location is atypical to other Greater Scaup breeding areas should not be overlooked. |
format |
Article in Journal/Newspaper |
author |
Tatman, Nicole M. McRoberts, Jon T. Smith, W. Andrew Ballard, Warren B. Kehoe, F. Patrick Dilworth, Timothy G. |
author_facet |
Tatman, Nicole M. McRoberts, Jon T. Smith, W. Andrew Ballard, Warren B. Kehoe, F. Patrick Dilworth, Timothy G. |
author_sort |
Tatman, Nicole M. |
title |
Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
title_short |
Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
title_full |
Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
title_fullStr |
Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
title_full_unstemmed |
Nest Success and Duckling Survival of Greater Scaup, Aythya marila, at Grassy Island, New Brunswick |
title_sort |
nest success and duckling survival of greater scaup, aythya marila, at grassy island, new brunswick |
publisher |
The Ottawa Field-Naturalists' Club |
publishDate |
2009 |
url |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001 https://doi.org/10.22621/cfn.v123i4.1001 |
genre |
Aythya marila greater scaup |
genre_facet |
Aythya marila greater scaup |
op_source |
The Canadian Field-Naturalist; Vol. 123 No. 4 (2009); 323-328 0008-3550 |
op_relation |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001/1005 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/1001 doi:10.22621/cfn.v123i4.1001 |
op_doi |
https://doi.org/10.22621/cfn.v123i4.1001 |
container_title |
The Canadian Field-Naturalist |
container_volume |
123 |
container_issue |
4 |
container_start_page |
323 |
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1766365062874791936 |