Sombre Rock Chat

Small seabird with attractive grayscale pattern. Mostly black head set off by white collar, pencil-thin white streaks which form an eyebrow, and gray back. Sides show a scaly pattern. Short bill has a pale yellow tip. All plumages are fairly similar; breeding birds show bolder eyebrow streaks and darker throat. Breeds on offshore islands; found in small flocks on coastal waters. Dives underwater for fish.

A well-marked bulbul with a bushy crest. Olive-green above with a pale yellow throat and extensive white streaks on a dark breast and pale belly. A foothill and submontane specialist found in broadleaf forests, both evergreen and deciduous. Forages in the forest canopy, often in the company of other bulbuls. Somewhat similar to Mountain Bulbul, but has a bushier, more erect crest, darker upperparts, and obvious streaking on the underparts. Generally not very vocal; gives various chirps, warbles, and chips, often strung together into a loose “song” with short, distinct phrases.

An entirely brownish-black swallow with darker wings and a forked tail. Often encountered in groups at the forest edge and in montane grassland. Only found on Bioko, where it is the only sawwing, and on Mt. Cameroon, where it is the common sawwing of high elevations. Calls are short, liquid “shu-shu” notes. Appears similar to other sawwings, especially to young Black Sawwings, but Mountain Sawwing is completely dark all over, including on the underwing.