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Aspects of circulatory physiology of montane and lowland birds

Authors: Carey, C.; Morton, M. L.
Year: 1976
Journal: Comparative Biochemistry and Physiology, Vol. 54A, pp. 61-74
Publisher: UNKNOWN
DOI: 10.1016/s0300-9629(76)80073-4
Keywords: ANIMAL PHYSIOLOGY, ORNITHOLOGY, PARUS GAMBELI, RMBL, SELASPHORUS, TURDUS MIGRATORIUS

Abstract

A comparison of blood values of American goldfinches during summer and winter in Michigan reveals an increase in blood characteristics of winter individuals similar in extent to that of winter pine siskins, raising the possibility that the blood parameters of high altitude birds reflect adjustments in oxygen carrying capacity to meet the thermogenic demands as well as hypoxia characterizing cold montane habitats.

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