The grey longbill (''Macrosphenus concolor'') is a species of

Old World warbler The Old World warblers are a large group of birds formerly grouped together in the bird family Sylviidae. They are not closely related to the New World warblers. The family held over 400 species in over 70 genera, and were the source of much taxo ...

in the family

Macrosphenidae The African warblers are a newly erected family Macrosphenidae, of African songbirds. Most of the species were formerly placed in the Old World warbler family Sylviidae, although one species, the rockrunner, was placed in the babbler family, Ti ...

. It is native to African tropical rainforest.

References

grey longbill Birds of the Gulf of Guinea Birds of the African tropical rainforest grey longbill Taxonomy articles created by Polbot {{Macrosphenidae-stub