Feather traits, wing morphology and abundance of southern populations of Sylvia atricapilla related to altitudinal movements

Irene Hernandez-Tellez
Moult of birds is shaped by environmental and genetic drivers whose relative contribution to the structure of feathers may differ within and between populations. In this study we compare some traits of tail feathers (growth bars, mass, rachis width and barb length) between four populations of the Eurasian blackcap (Sylvia atricapilla) breeding at different elevations within the southwestern Palaearctic. We tested if these traits were related to the primary productivity of habitats (a surrogate of...
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