Papyrus yellow warbler

The papyrus yellow warbler, papyrus flycatcher-warbler or thin-billed flycatcher-warbler, (Calamonastides gracilirostris) is a species of tree warbler; formerly, these were placed in the paraphyletic "Old World warblers". It is monotypic in its genus. It is found in Burundi, Democratic Republic of the Congo, Kenya, Rwanda, Tanzania, Uganda, and Zambia. Its natural habitat is swamps. It is threatened by habitat loss.