La Tour du Valat

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Status of Raso Lark Alauda razae in 2003, with further notes on sex ratio, behaviour and conservation

P. F. Donald, Auteur ; M. D. Brooke, Auteur ; M. R. Bolton, Auteur ; R. Taylor, Auteur ; C. E. Wells, Auteur ; T. Marlow, Auteur ; S. M. Hille, Auteur

Dans Bird Conservation International (15(2) JUN 2005)

The global population of the Critically Endangered Raso Lark Alauda razac was estimated in January 2003 at 93-103 birds and in November 2003 at 76-87 birds. Of these, only 25-35% were females. Counts were based on observations of individually co[...]

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