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Effect of Culling on Population Size in Hooded Crows Corvus corone cornix

Howard Parker
Ornis Scandinavica (Scandinavian Journal of Ornithology)
Vol. 16, No. 4 (Dec., 1985), pp. 299-304
Published by: Wiley on behalf of Nordic Society Oikos
DOI: 10.2307/3676694
Stable URL: http://www.jstor.org/stable/3676694
Page Count: 6
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Effect of Culling on Population Size in Hooded Crows Corvus corone cornix
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Abstract

Territorial and non-breeding Hooded Crows were removed from an area of sub-arctic island habitat between mid-May and August each year for 4 years. The number of breeding pairs on the culled area declined to zero by the fourth year. Breeding numbers on an adjacent control area remained stable. Numbers of non-breeders on the island also declined, though less drastically. Fledged broods on the control area remained mainly on their respective territories during the culling period. Few fledged young returned to the island after wintering elsewhere. The results indicated that breeding and non-breeding crows can be culled locally without significantly affecting crow breeding numbers on adjacent areas.

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