The grey-capped warbler is found in
Burundi,
Democratic Republic of the Congo,
Kenya,
Rwanda,
South Sudan,
Tanzania, and
Uganda. It is a large, chunky, thin-tailed-warbler with a distinctive grey cap, a black band around its head, and a chestnut throat wrapping its neck. Grey-capped warblers maintain a diet of insects and other invertebrates, including caterpillars, moths, grasshoppers, and mantids.
Wikipedia