La Tour du Valat

Article

[Females preserving juvenility: Sex specific development of feather characteristics in the Shelduck (Tadorna tadorna).]

Simone Verbarg, Auteur ; Hans-Heiner Bergmann, Auteur ; Wiltraud Englaender, Auteur

Dans Vogelwarte (41(2) 2001)

White fringes of 6th, 10th and 12th secondary flight feathers of shelducks were scanned and their proportions of the vane areas measured using ArcView GIS software. First year birds had broad conspicuous fringes on both all secondaries and prima[...]

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