Nest-site selection by the sympatric Great Hornbill Buceros bicornis, Wreathed Hornbill
Aceros undulatus and Oriental Pied Hornbill Anthracoceros albirostris was investigated in
a lowland tropical forest in Arunachal Pradesh, north-east India during 1997–2000. Information
on two nests of the Rufous-necked Hornbill Aceros nipalensis in higher-elevation
forests is also presented