Also found in: Dictionary, Thesaurus.
(Anastomus oscitans), a bird of the stork family, order Ciconiiformes. Body length, approximately 80 cm. The bill is thick and pinched in from the sides; when the bill is closed a broad opening remains between the jaws, hence the name. Young birds have bills of normal shape. The feathers are white, the tail and wings black.
The openbill is found in southern Asia from India to Cambodia. It nests in colonies on trees near bodies of water, laying from two to four eggs in a clutch. It feeds on mol-lusks, crabs, and amphibians. A closely related genus, Anastomus lamelligerus, with darker coloration, is found in tropical Africa and on Madagascar.