Rufous-necked Hornbill Aceros nipalensis

Large hornbill with broad dark grooves on the upper mandible. Male has rufous head, neck, and underparts; female is all black. Both sexes have a sky-blue patch of facial skin, a red throat pouch, and a black-and-white tail. Inhabits dense hill forest with tall mature trees. Forages for fruits in the forest canopy, usually in pairs or small groups. Gives loud, echoing croaks, roars, and grunts.