Body and Brain Temperatures in Pigeons at Simulated High Altitudes
Most birds maintain the brain temperature (Tb) below body-core temperature (Tc), and regulate Tb and Tc independently. During exercise or exposure to high ambient temperature (Ta) the temperature difference between the body core and brain (dT = Tc−Tb) is greater than at rest or thermal neutrality, due mainly to elevated Tc. By keeping stored heat in the body core and away from the brain, birds reduce their water requirements while protecting the brain from thermal damage.
KeywordsBody Core Brain Temperature High Ambient Temperature Brain Cool Herring Gull
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