White headed Buffalo weaver (Dinemellia dinemelli), in Acacia tree. Serengeti National park, Tanzania, East Africa. (Featured in Africans is my Mother Tongue..) They are found in dry savanna, open thorn scrub and acacia woodland. The nest is built high in a tree in a fork of branches. It is a large, rather untidy structure of twigs and coarse grasses, the short tubular entrance being on the bottom. Fine grasses and feathers provide a warm lining and both birds work on the construction.
Canon 500D, Canon 100-400mm lens