Species list include some wonderfully distinctive and unusual birds. Dohrn’s Flycatcher is in a genus of its own, its former name of Dohrn’s Thrush-babbler suggesting still-unclear  taxonomic relationships. Black-capped and Principe speirops are two of a group of four speirops confined to offshore islands of West Africa and Cameroon—related to the White-eyes, they are distinctive, cute, and precocious!
The Giant Weaver really lives up to its name; it is frankly huge. The Sao Tome Weaver has adopted the ecological niche of nuthatch/treecreeper, with behavior quite unusual for a typical weaver. The Sao Tome Sunbird is a rare treat and one of three endemic sunbirds. Its former name of Giant Sunbird is much more apt, as, like the Giant Weaver, it truly is a massive bird compared to its congeners. 

In addition to these eye-catchers, there is a fascinating and varied range of other endemics, including a paradiseflycatcher, scops-owl, prinia, swift, white-eye, seedeater, oriole, thrush, starling, and four pigeons Three species endemic to the island—Bocage’s Longbill, Newton’s Fiscal, and Sao Tome Grosbeak—are much harder to find, but entirely possible. The São Tomé Grosbeak" has only been seen twice, in 1888 and in 1991!

You should also find an interesting “supporting cast” of birds, including many West African mainland specialties such as Olive Ibis, Harlequin Quail, Gray Parrot, Whitebellied and Blue-breasted kingfishers, Velvet-mantled Drongo, Chestnut-winged and Splendid glossy-starlings, Chestnut-breasted Negrofinch, Golden-backed Bishop, and Blue-breasted Cordonbleu. Seabirds and wetland species may include White-tailed Tropicbird, Brown Booby, Bridled Tern, Brown Noddy, Long-tailed Cormorant, and Western Reef-Egret.
 

 The endemic birds of Sao Tome (ST) and Principe (P)

African mainland species with endemic subspecies on Sao Tome (ST) and Principe (P)