Turdus olivaceus helleri
The Taita thrush (Turdus helleri), also known as Taita olive thrush or Heller's ground thrush, is a critically endangered bird from the family of thrushes (Turdidae), endemic to the Taita Hills in Kenya.
The Taita thrush was previously classified as subspecies of the olive thrush (Turdus olivaceus), but it is regarded as distinct species since 1985. It reaches a length between 20 to 22 centimetres. Head, breast and upperparts are coloured darkly. The underparts are white and the flanks have a rufous hue. The eyes and the bill exhibit a pale orange coloration. It was named after zoologist Edmund Heller (1875–1939) a workmate of the American ornithologist Edgar Alexander Mearns (1856–1916) who described this species scientifically in 1913.
The Taita thrush is a forest-dependent endemic bird confined to three forests in the Taita Hills (in the south east of Kenya): Mbololo, Chawia and Ngangao. The forests cover a tiny 342 ha. Conservationists are using birds – with the thrush as the flagship species – to champion the conservation of the Taita Hills forests.
It is restricted to montane moist forests. Though its natural habitat where it is occurred was severely logged in the past it is avoided forests with secondary growth, shrub vegetation, and cultivated areas. Despite of extensive research only a very few migrations were determined between the fragmented populations.