Abstract

We measured standard metabolic rate (SMR) and the effects of temperature on metabolism of adult eastern wild turkeys (Meleagris gallopavo silvestris) during each season of the year. Female SMR was similar throughout the year, and male SMR was lower during spring. Female SMR exceeded male SMR each season and was significantly (P<0.05) higher during summer and autumn. Bothe sexes had similar lower critical temperatures (T lc ), but females lost heat faster below T lc . Low winter T lc (about −15 C) indicated that thermoregulatory costs are probably minimal for turkeys at normal winter temperatures in southcentral New Hampshire

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