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Article

Sexual differences in levels of blood carotenoids in Cirl Buntings Emberiza cirlus

J. Figuerola, Auteur ; R. Gutierrez, Auteur

Dans Ardea (86(2) 1998)

Carotenoids are responsible for the bright red and yellow plumage of birds. These substances cannot be synthesised by birds and must be obtained from the diet and transported through the blood to the feathers. The carotenoid content of blood was[...]

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Article

Why do juvenile Moustached Warblers have shorter wings?

J. Figuerola, Auteur ; R. Gutierrez, Auteur

Dans Ornis Fennica (77(4) 2000)

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