COSEWIC assessment and status report on the Chimney Swift (Chaetura pelagica) in Canada. : CW69-14/468-2018E-PDF
"This aerial insectivore is a long-distance migrant, breeding in central and eastern Canada and wintering in South America. It has experienced a long-term population decline of close to 90% since 1970 in areas outside towns and cities, including a reduction of 49% over the past three generations (14 years). However, most roost counts in towns and urban areas show relatively stable numbers. A significant cause of decline is the reduced availability of aerial insects, likely due to the effects of agricultural and other pesticides, changing agricultural practices, and broad-scale ecosystem modifications in much of its breeding, migratory and wintering range. Reduced availability of roosting and nesting sites in chimneys and similar human-made structures, and in large hollow trees, is also likely contributing to declines. Greater frequency and severity of weather extremes may be reducing productivity, and increasing mortality during migration"--Assessment summary, page iii.
Lien permanent pour cette publication :
publications.gc.ca/pub?id=9.862008&sl=1
| Ministère/Organisme | Committee on the Status of Endangered Wildlife in Canada. Canada. Environment and Climate Change Canada. |
|---|---|
| Titre | COSEWIC assessment and status report on the Chimney Swift (Chaetura pelagica) in Canada. |
| Type de publication | Monographie |
| Langue | [Anglais] |
| Autres langues publiées | [Français] |
| Édition précédente | COSEWIC assessment and status report on the Chimney Swift, Chaetura pelagica, in Canada |
| Format | Électronique |
| Document électronique | |
| Note(s) | Issued also in French under title: Évaluation et rapport de situation du COSEPAC sur le Martinet ramoneur (Chaetura pelagica) au Canada. "Threatened 2018." Includes bibliographical references (pages 41-54). |
| Information sur la publication | Ottawa, ON : Committee on the Status of Endangered Wildlife in Canada = Comité sur la situation des espèces en péril au Canada, [2018] ©2018 |
| Description | 1 online resource (xii, 63 pages) : illustrations (some colour) |
| ISBN | 9780660278483 |
| Numéro de catalogue |
|
| Descripteurs | Endangered species Chimney swift Chaetura pelagica |
Demander des formats alternatifs
Pour demander une publication dans un format alternatif, remplissez le formulaire électronique des publications du gouvernement du Canada. Utilisez le champ du formulaire «question ou commentaire» pour spécifier la publication demandée.- Date de modification :