The Karoo thrush (Turdus smithi) also known as Smith's thrush, is a member of the thrush family in Africa. It has traditionally been considered a subspecies of the olive thrush (with which it is known to hybridize), but is increasingly treated as a separate species.
This medium-sized bird has a length of about 24 cm. It has a wing length between 117 and 131 mm, a culmen length between 20 and 24 mm and a tarsus length between 30.0 and 34.5 mm. It can reach a mass of at least 86 g. It differs from the olive thrush by its longer, entirely yellow bill, its longer wings, and its greyer flanks.
Adult showing grey flank (yellow in olive thrush)
- BirdLife International. 2017. Turdus smithi. (amended version published in 2016) The IUCN Red List of Threatened Species 2017: e.T22734108A119723093. https://dx.doi.org/10.2305/IUCN.UK.2017-3.RLTS.T22734108A119723093.en. Downloaded on 27 December 2017.
- Bo T Bonnevie, The biology of suburban Olive Thrushes (Turdus olivaceus olivaceus) in the Eastern Cape, South Africa (2005). M.Sc. thesis, Rhodes University, South Africa
- Olive/Karoo Thrush identification
- Birds of Southern Africa - Karoo Thrush
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