|Karoo chat (Emarginata schlegelii) in South Africa|
The three species in the genus were previously placed in the genus Cercomela. A molecular phylogenetic study published in 2010 found that Cercomela was polyphyletic and that the type species Cercomela melanura (the blackstart) lay in a clade containing members of Oenanthe. A more comprehensive study published in 2012 confirmed the earlier results. In order to create monophyletic genera the species assigned to Cercomela were moved into other genera. Three species were placed in the resurrected genus Emarginata that had been introduced by the English ornithologist George Ernest Shelley in 1896.
The three species in the genus are:
- Sickle-winged chat (Emarginata sinuata)
- Karoo chat (Emarginata schlegelii)
- Tractrac chat (Emarginata tractrac)
- Outlaw, R.K.; Voelker, G.; Bowie, R.C.K. (2010). "Shall we chat? Evolutionary relationships in the genus Cercomela (Muscicapidae) and its relation to Oenanthe reveals extensive polyphyly among chats distributed in Africa, India and the Palearctic". Molecular Phylogenetics and Evolution. 55 (1): 284–292. doi:10.1016/j.ympev.2009.09.023.
- Aliabadian, M.; Kaboli, M.; Förschler, M.I.; Nijman, V.; Chamani, A.; Tillier, A.; Prodon, R.; Pasquet, E.; Ericson, P.G.P.; Zuccon, D. (2012). "Convergent evolution of morphological and ecological traits in the open-habitat chat complex (Aves, Muscicapidae: Saxicolinae)". Molecular Phylogenetics and Evolution. 65 (1): 35–45. doi:10.1016/j.ympev.2012.05.011.
- Gill, Frank; Donsker, David, eds. (2016). "Chats, Old World flycatchers". World Bird List Version 6.2. International Ornithologists' Union. Retrieved 20 May 2016.
- Shelley, George Ernest (1896). Birds of Africa, comprising all the species which occur in the Ethiopian Region. Volume 1. London: R.H. Porter. p. 89.
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