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Morphological differences between Nearctic and eastern Palearctic Gray-headed Chickadees (Poecile cinctus)

Lucas H. DeCicco, Auteur ; Dave Shutler, Auteur ; Stephen W. Mockford, Auteur

Dans Wilson Journal of Ornithology (The) (129(1) March, 2017)

ABSTRACT The geographic distribution of the non-migratory Gray-headed Chickadee (Poecile cinctus) straddles the continents of North America and Eurasia. Morphological variation in this species has been poorly studied, particularly regarding diff[...]

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