Does the group foraging behavior of Double-crested Cormorants increase the proportion of successful dives?

Pettit, Suzanne

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Pettit, Suzanne

1995

Abstract: The foraging behavior of Double-crested Cormorants (Phalacrocorax auritus) was observed in Les Cheneaux Islands region of the Upper Peninsula in Michigan. Results support the hypothesis that proportion of successful dives significantly increases (p=.036) with increasing flock size. These data suggest that Double-crested Cormorants live in groups for benefits of foraging. The type of interaction which is engaged during foraging, cooperative predation or information parasitism, cannot be determined from this study.

Handle:
https://hdl.handle.net/2027.42/54622

Subject(s): Behavioral Ecology

Type(s): Working Paper

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