The Herring Gull orients the white part of the body towards the sun to reflect heat. The Wood Stork, when hot, directs its liquid excrement onto its long legs. The domestic chicken splashes water over its comb and wattles. The Egyptian Plover wets its belly in puddles and cools itself and its eggs and the sand around the nest. Precocial species are those hatched covered with down and are able to respond immediately to changes in the ambient temperature as they are capable of thermoregulation or are able to withstand body temperature fluctuations without harm.
Examples are waterfowl, chicken, ptarmigan, etc.
Altricial species, those born naked, such as songbirds, woodpeckers, doves, etc. have little or no ability to thermoregulate and are heavily dependent on their parents to warm them. It may be 10 days before they can fully thermoregulate.