The yellow longbill (Macrosphenus flavicans) is a species of Old World warbler in the family Macrosphenidae.

It has a short tail and a black long straight bill with a small hook at the tip.

[3] The yellow longbill's habitat is in the forest, more specifically the subtropical and tropical moist lowland.

[3] Lowland habitats are of the lower and middle levels, including the primary and secondary forest.

The Macrosphenus flavicans hypochondriacus subspecies is distributed throughout southeast Central African Republic, southwest South Sudan (Bengangai Forest), north, central, and east Democratic Republic of the Congo, west and south Uganda and northwest Tanzania (Minziro Forest).

[2] The diet of a yellow longbill consists of spiders and insects, such as moths, caterpillars, and beetles.

Two discrete populations of the yellow longbill exist in forests of West and Central Africa.