Malabar Pied Hornbill | photo by Merkur*
The Malabar Pied Hornbill is a common resident breeder in tropical southern Asia from India and Sri Lanka east to Borneo. Its habitat is open woodland and cultivation, often close to habitation.
During incubation, the female lays two or three white eggs in a tree hole, which is blocked off with a cement made of mud, droppings and fruit pulp. There is only one narrow aperture, just big enough for the male to transfer food to the mother and the chicks.
When the chicks have grown too large for the mother to fit in the nest with them, the mother breaks out and rebuilds the wall, after which both parents feed the chicks. (wiki)