The status of trumpeter swans in British Columbia and Yukon, summer 1985 / R. McKelvey. : CW69-5/8E-PDF
"A survey was conducted in July and August 1985 to determine the status of Trumpeter Swans breeding in British Columbia and Yukon. A total of 185 adults (white birds) and 53 cygnets were recorded. All areas except the Ft. St. John area had fewer swans than in previous years. Possible causes of those changes are discussed. The most likely reason for the decline noted is high mortality on the wintering area near Yellowstone National Park, U.S.A."--Abstract, p. i.
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| Ministère/Organisme | Canada. Environment Canada. Canadian Wildlife Service. Pacific and Yukon Region. |
|---|---|
| Titre | The status of trumpeter swans in British Columbia and Yukon, summer 1985 / R. McKelvey. |
| Titre de la série | Technical report series ; no. 8 |
| Type de publication | Série - Voir l'enregistrement principal |
| Langue | [Anglais] |
| Format | Électronique |
| Document électronique | |
| Note(s) | Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. Includes abstract in French. |
| Information sur la publication | Delta, B. C. : Pacific and Yukon Region, Canadian Wildlife Service, Environment Canada, 1986. |
| Auteur / Contributeur | McKelvey, Richard W. |
| Description | iii, 29 p. : maps. |
| Numéro de catalogue |
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| Numéro de catalogue du ministère | CW69-5/8E |
| Descripteurs | Migratory birds |
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