Determinants of breeding distributions of ducks
Use is made of the results of surveys conducted annually during 1955-81 in major breeding areas to examine the factors that affect the distributions of 10 common North American duck species. Survey sites included those in Yukon, NWT, the Prairie provinces and Alaska.
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| Hauptverfasser: | , |
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| Format: | Buch |
| Sprache: | English |
| Veröffentlicht: |
Bethesda, Md.
Wildlife Soc.
1988
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| Schriftenreihe: | Wildlife monographs
100 |
| Schlagworte: | |
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| Zusammenfassung: | Use is made of the results of surveys conducted annually during 1955-81 in major breeding areas to examine the factors that affect the distributions of 10 common North American duck species. Survey sites included those in Yukon, NWT, the Prairie provinces and Alaska. |
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| Beschreibung: | 37 S. Kt. |