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A Review of the Status of Greater and Lesser Scaup in North America
U S Fish & Wildlife Service
(Autor)
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Createspace Independent Publishing Platform
· Tapa Blanda
A Review of the Status of Greater and Lesser Scaup in North America - U S Fish & Wildlife Service
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Reseña del libro "A Review of the Status of Greater and Lesser Scaup in North America"
The combined population of greater scaup and lesser teacup in North America has declined substantially in recent years. In 1998 it reached the lowest level recorded since the start of systematic North American surveys in 1955. Concern about the numbers of scaup prompted this review of the status of the two species.
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