Warbler-finch explained

The warbler-finches are a genus Certhidea of birds in the tanager family Thraupidae that are endemic to the Galápagos Islands. Together with related genera, they are collectively known as Darwin's finches.

The two species were formerly considered to be conspecific; however, they have different songs, prefer different habitats, and are located in different areas on the islands.^[1]

Taxonomy and species list

The genus Certhidea was introduced in 1837 by the English ornithologist John Gould with the green warbler-finch as the type species.^{[2] [3]} The name is a Latin diminutive of the genus Certhia introduced by Carl Linnaeus in 1758 for the treecreepers.^[4] The members of the genus form part of a group collectively known as Darwin's finches.^[5] Although traditionally placed with the buntings and New World sparrows in the family Emberizidae,^[3] molecular phylogenetic studies have shown that Darwin's finches are members of the subfamily Coerebinae within the tanager family Thraupidae.^[6] The genus contains two species.^[7]

Image	Scientific name	Common Name	Distribution
	Certhidea olivacea		Galápagos Islands, Ecuador
	Certhidea fusca		Galápagos Islands, Ecuador.

Notes and References

1. Web site: South American Classification Committee . South American Classification Committee . Proposal (#367) to South American Classification Committee – Split the Warbler Finches: Certhidea fusca from Certhidea olivacea. . September 1, 2011 . November 10, 2009.
2. Gould . John . John Gould . 1837 . Remarks on a group of Ground Finches from Mr. Darwin's collection, with characters of new species . Proceedings of the Zoological Society of London . Part 5 . 49 . 4–7 [7] .
3. Book: Paynter . Raymond A. Jr . 1970 . Check-List of Birds of the World . 13 . Museum of Comparative Zoology . Cambridge, Massachusetts . 166 .
4. Book: Jobling, James A. . 2010. The Helm Dictionary of Scientific Bird Names . Christopher Helm . London . 978-1-4081-2501-4 . 97 .
5. Sato . A. . Tichy . H. . O'hUigin . C. . Grant . P.R. . Grant . B.R. . Klein . J. . 2001 . On the origin of Darwin's Finches . Molecular Biology and Evolution . 18 . 3 . 299–311 . 10.1093/oxfordjournals.molbev.a003806 . 11230531 . free .
6. Burns . K.J. . Shultz . A.J. . Title . P.O. . Mason . N.A. . Barker . F.K. . Klicka . J. . Lanyon . S.M. . Lovette . I.J. . 2014 . Phylogenetics and diversification of tanagers (Passeriformes: Thraupidae), the largest radiation of Neotropical songbirds . Molecular Phylogenetics and Evolution. 75. 41–77 . 10.1016/j.ympev.2014.02.006 . 24583021 .
7. Web site: Gill . Frank . Frank Gill (ornithologist) . Donsker . David . Rasmussen . Pamela . Pamela Rasmussen . July 2020 . Tanagers and allies . IOC World Bird List Version 10.2 . International Ornithologists' Union . 12 November 2020 .