The Nesting of the White-winged Chough

Abstract

The nesting procedure of the White-winged Chough, Corcorax melanorhamphus, is recorded in detail, and follows on the paper of the group movements of this species (Baldwin, Australian Bird Watcher, 4 : 69-77). lt is shown that the White-winged Chough is a bird of fixed habits. A well defined nesting circle is established and it remains constant throughout successive seasons. A nesting party is limited in number and it is adjusted, after the fledging of the chicks, by removal of surplus birds. Displaced birds form a pool, and the composition of the winter pools should repay study. The nest is well planned, the ridged form adding strength, and it is equipped with a draining system. The type of food given to chicks is governed by the water content. The White-wing Chough is a highly developed avian species.