Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada
Redpoll (primarily Carduelis flammea) data from the New Brunswick–Nova Scotia border region were reviewed in the context of alleged biennial periodicity of irruptions south of their breeding range. Long-term records by the authors suggested a number of departures from visitation in alternate years....
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Language: | English |
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The Ottawa Field-Naturalists' Club
2003
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Online Access: | https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831 https://doi.org/10.22621/cfn.v117i4.831 |
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ftjcfn:oai:canadianfieldnaturalist.ca:article/831 2023-05-15T17:22:13+02:00 Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada Erskine, Anthony J. McManus, Reid 2003-10-01 application/pdf https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831 https://doi.org/10.22621/cfn.v117i4.831 eng eng The Ottawa Field-Naturalists' Club https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831/831 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831 doi:10.22621/cfn.v117i4.831 The Canadian Field-Naturalist; Vol. 117 No. 4 (2003); 611-620 0008-3550 Common Redpoll Carduelis flammea Atlantic Provinces winter irruptions periodicity food availability info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2003 ftjcfn https://doi.org/10.22621/cfn.v117i4.831 2021-09-02T18:54:08Z Redpoll (primarily Carduelis flammea) data from the New Brunswick–Nova Scotia border region were reviewed in the context of alleged biennial periodicity of irruptions south of their breeding range. Long-term records by the authors suggested a number of departures from visitation in alternate years. Three local Christmas Bird Counts (CBCs) spanning the last 41 winters supported the less-than-regular pattern shown by individual observations. CBC redpoll data from across the Atlantic Provinces revealed annual redpoll visitations across southern New Brunswick, where the largest regional counts (adjusted for observer effort) usually occurred. Visitation to Prince Edward Island, Nova Scotia, and Newfoundland was less frequent, and patterns there were often obscured by scarcity of CBCs with both long-run coverage and redpolls. Examination of those data in relation to varying food availability suggested that irregular abundance but near-annual occurrence of redpoll visitation explains observed observations better than attempts to find periodicity in their irruptions. Article in Journal/Newspaper Newfoundland Prince Edward Island The Canadian Field-Naturalist (E-Journal) Canada The Canadian Field-Naturalist 117 4 611 |
institution |
Open Polar |
collection |
The Canadian Field-Naturalist (E-Journal) |
op_collection_id |
ftjcfn |
language |
English |
topic |
Common Redpoll Carduelis flammea Atlantic Provinces winter irruptions periodicity food availability |
spellingShingle |
Common Redpoll Carduelis flammea Atlantic Provinces winter irruptions periodicity food availability Erskine, Anthony J. McManus, Reid Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
topic_facet |
Common Redpoll Carduelis flammea Atlantic Provinces winter irruptions periodicity food availability |
description |
Redpoll (primarily Carduelis flammea) data from the New Brunswick–Nova Scotia border region were reviewed in the context of alleged biennial periodicity of irruptions south of their breeding range. Long-term records by the authors suggested a number of departures from visitation in alternate years. Three local Christmas Bird Counts (CBCs) spanning the last 41 winters supported the less-than-regular pattern shown by individual observations. CBC redpoll data from across the Atlantic Provinces revealed annual redpoll visitations across southern New Brunswick, where the largest regional counts (adjusted for observer effort) usually occurred. Visitation to Prince Edward Island, Nova Scotia, and Newfoundland was less frequent, and patterns there were often obscured by scarcity of CBCs with both long-run coverage and redpolls. Examination of those data in relation to varying food availability suggested that irregular abundance but near-annual occurrence of redpoll visitation explains observed observations better than attempts to find periodicity in their irruptions. |
format |
Article in Journal/Newspaper |
author |
Erskine, Anthony J. McManus, Reid |
author_facet |
Erskine, Anthony J. McManus, Reid |
author_sort |
Erskine, Anthony J. |
title |
Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
title_short |
Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
title_full |
Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
title_fullStr |
Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
title_full_unstemmed |
Supposed Periodicity of Redpoll, Carduelis sp., Winter Visitations in Atlantic Canada |
title_sort |
supposed periodicity of redpoll, carduelis sp., winter visitations in atlantic canada |
publisher |
The Ottawa Field-Naturalists' Club |
publishDate |
2003 |
url |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831 https://doi.org/10.22621/cfn.v117i4.831 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Newfoundland Prince Edward Island |
genre_facet |
Newfoundland Prince Edward Island |
op_source |
The Canadian Field-Naturalist; Vol. 117 No. 4 (2003); 611-620 0008-3550 |
op_relation |
https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831/831 https://www.canadianfieldnaturalist.ca/index.php/cfn/article/view/831 doi:10.22621/cfn.v117i4.831 |
op_doi |
https://doi.org/10.22621/cfn.v117i4.831 |
container_title |
The Canadian Field-Naturalist |
container_volume |
117 |
container_issue |
4 |
container_start_page |
611 |
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1766108691511115776 |