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Sexual aggression by intruders in hooded crow Corvus cornix.


ABSTRACT: The hooded crow Corvus cornix is a west Palaearctic, solitary nesting, monogamous corvid. In the breeding season, populations are characterized by a social organization wherein breeding pairs are territorial and non-breeding individuals, called floaters, live in flocks. During a study of the breeding ecology of the hooded crow, conducted in a protected flooded area, we monitored nests with video cameras. We recorded two separate incidents when intruders attacked a female at the nest. We believe that she remained in the nest in order to prevent the strangers cannibalizing the nestlings by mantling over the brood. The spatio-temporal occurrence of these attacks suggests that the observed behaviour is intraspecific sexual aggression wherein non-breeding males mounted an immobilized female.

SUBMITTER: Zduniak P 

PROVIDER: S-EPMC4722061 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Sexual aggression by intruders in hooded crow <i>Corvus cornix</i>.

Zduniak Piotr P   Kosicki Jakub Z JZ   Yosef Reuven R  

Acta ethologica 20150916


The hooded crow <i>Corvus cornix</i> is a west Palaearctic, solitary nesting, monogamous corvid. In the breeding season, populations are characterized by a social organization wherein breeding pairs are territorial and non-breeding individuals, called floaters, live in flocks. During a study of the breeding ecology of the hooded crow, conducted in a protected flooded area, we monitored nests with video cameras. We recorded two separate incidents when intruders attacked a female at the nest. We b  ...[more]

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