[The energy metabolism of the Emperor penguin (Aptendodytes patagonica J. F. Miller) in ambient natural conditions]. / Etude de la dépense énergétique du poussin de manchot royal (Aptenodytes patagonica J. F. Miller) dans les conditions ambiantes naturelles

In natural ambient conditions at Possession Island the resting metabolism of the emancipated King Penguin is 50.40 kcal/kg/D. A bird whose insulation is good and which maintains its stomachic temperature at a high level can reduce its heat production by 42% during the long fasting periods which characterize its reproductive cycle, in particular by social and individual thermoregulating behaviour.