Development of thermoregulatory ability during ontogeny in the White Stork Ciconia ciconia

The development of thermoregulation abilities in White Stork Ciconia ciconia nestlings was examined. Our results showed that body mass, and not age, was the best predictor for thermoregulatory ability despite what was found in passerines. White Stork nestlings did not develop their thermoregulatory abilities abruptly since their capacity to keep their body temperature developed gradually. When nestlings reached 1700 g they have just finished to growth at their maximum rate (inflexion point in the growth curve) and they were able to keep their body temperature above 39.5