Title: Egg Predation by Corvids in Gull Colonies on Lake Huron
Abstract:-I recorded heavy predation by American Crow (Corvus brachyrhynchos) and Common Raven (C. corax) on Herring Gull (Larus argentatus) and Ring-billed Gull (L. delawarensis) eggs at four colonies on Lake...-I recorded heavy predation by American Crow (Corvus brachyrhynchos) and Common Raven (C. corax) on Herring Gull (Larus argentatus) and Ring-billed Gull (L. delawarensis) eggs at four colonies on Lake Huron in 1990. Gulls experienced total reproductive failure, associated with large numbers of eggs taken by corvids. Average breeding success was significantly higher at colonies on non-wooded than on wooded islands, possibly related to reduced cover for corvid predators. It was not possible to attribute these failures solely to corvid predation since factors such as the presence of a Red Fox (Vulpes vulpes), and food stresses for gulls could not be ruled out. Received 22 November 1990, accepted 22 March 1991.Read More
Publication Year: 1991
Publication Date: 1991-01-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 16
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