Yellow-rumped Honeyguide

The yellow-rumped honeyguide is a sparrow-sized honeyguide with a stout, finch-like bill and strong zygodactyl feet, with two toes forward and two back. The plumage is largely dusky olive, with an orange forehead and lores, a deep orange rump extending into the back and grading to sulphur yellow, a yellowish chin and throat and pale grey lower plumage with dark streaks. It perches on honeycombs and feeds on wax (Wikipedia, general species account).

It feeds mainly on the foundation wax that attaches the combs of the giant rock bee, Apis laboriosa, to rocks, and feeds on active hives without disturbing the bees much. Males are territorial and stay near honeycombs, while females and juveniles forage widely, a mating system described as resource-based, non-harem polygyny. Honeyguides are brood parasites, laying eggs in the nests of tree-hole breeders, possibly barbets, and young honeyguides have bill hooks to destroy the host's eggs and chicks. A chipping call is given in flight and when agitated (Wikipedia, general species account).