Temperature Regulation and Heat Balance in Flying White-necked Ravens, Corvus Cryptoleucus
Open Access
- 1 February 1981
- journal article
- Published by The Company of Biologists in Journal of Experimental Biology
- Vol. 90 (1) , 267-281
- https://doi.org/10.1242/jeb.90.1.267
Abstract
During level flight at 10 m.s−1 in a wind tunnel, white-necked ravens (Corvus cryptoleucus, mass 0·48 kg) exhibited an increase in body temperature to steady-state levels as high as 45°C, exceeding resting levels by nearly 3°C. This reflects the storage of up to half of the metabolic heat produced (Hp) during 5 min of flight. During steady-state flight, body heat was dissipated in part by respiratory evaporation and convection (13–40% of Hp) evoked by increases in ventilation proportional to body temperature. Remaining heat was lost by cutaneous evaporation (10% of Hp) as well as by radiation and convection from the external body surface. The results suggest strategies that might be used by ravens during flight under desert conditions.Keywords
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