ORDEN C VAN & OOYEVAAR C (1971) Short announcements: Interesting cases in Schoorl breeding in 1970. LIMOSA 44 (1): 61-61.

Interesting cases in Schoorl breeding in 1970 Brambling Fringilla montifringilla Firecrest Regulus ignicapilla Eurasian Sparrowhawk Accipiter nisus Lesser Redpoll Carduelis cabaret

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