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Determination of the origin of British feral Rose-ringed Parakeets

Josephine A. Pithon, Auteur ; Calvin Dytham, Auteur

Dans British Birds (94(2) February, 2001)

Four subspecies of Rose-ringed Parakeet Psittacula krameri are recognised, two African and two Indian. The likely origin of those individuals living in the wild in Britain was investigated by comparing body measurements and colour characters of [...]

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