Gladiador de las Uluguru Malaconotus alius

A large, unusual bushshrike of Tanzania’s Uluguru Mountains with a huge bill, a black head, a green back, and yellow underparts. Found in the canopy of montane forest, usually in pairs. Most often detected by the distinctive and unusual voice, which consists of sliding whistles given in pairs, one lower and one higher, along with well-spaced ratcheting notes. These two vocalizations are usually synchronized as a duet by a pair.