アオムネオオヤブモズ Malaconotus gladiator

A large, robust bushshrike with a massive head, a chunky hook-tipped black bill, and a pale eye; plumage is dull uniform olive, paler underneath, and head is gray. An uncommon resident endemic to the Cameroon-Nigeria highlands, found singly and in pairs in the canopy and at middle levels of primary hill and montane forest between 930 and 2300 meters of elevation, preferring steep slopes. Gives a low-pitched extended sorrowful “whhooooooo-lwe” song up to 10–15 times in succession, along with harsh clicks and rasps. Other similar large bushshrikes are yellow or orange underneath.