Evidence for a Proximate Influence of Winter Temperature on Metabolism in Passerine Birds

• Published in: Physiological and biochemical zoology Vol. 72; no. 5; pp. 566 - 575
• Main Authors: Swanson, David L., Olmstead, Karen L.
• Format: Journal Article
• Language: English
• Published: United States The University of Chicago Press 01.09.1999
• Subjects: Acclimatization; Adaptation, Physiological; Animals; Climate models; Cold Temperature; Cold tolerance; Finishing; Lipid metabolism; Metabolism - physiology; Multiple regression; Seasons; Songbirds; Songbirds - physiology; Sparrows; Waterfowl; Winter

The roles of ultimate and proximate factors in regulating basal and summit metabolic rates of passerine birds during winter have received little study, and the extent to which winter temperatures affect these variables is unknown. To address this question, we measured basal and summit (maximum cold‐...