Certhidea fusca
The Grey Warbler-Finch, *Certhidea fusca*, is one of the smallest and most distinctive members of the iconic Darwin's Finches, an evolutionary marvel endemic to the Galápagos Islands. Averaging just 10-11 cm in length and weighing around 8 grams, it boasts a slender, pointed bill perfectly adapted for its insectivorous diet, strongly resembling a true warbler rather than a typical finch. Its plumage is generally drab grey-brown above, with paler, whitish underparts, sometimes exhibiting a fai...
This species primarily inhabits arid and semi-arid lowlands, including dry deciduous forest, scrub, and rocky areas with scattered vegetation, often at lower elevations.
Primarily insectivorous, feeding on small arthropods such as insects and spiders, gleaned from vegetation. They also supplement their diet with nectar from flowers and occasionally small seeds.
Grey Warbler-Finches are diurnal and intensely active foragers, spending most of their daylight hours gleaning insects from foliage, twigs, and bark, often hovering briefly or probing crevices with their delicate bills. They are generally solitary or found in pairs during the breeding season, but...
The Grey Warbler-Finch is endemic to the Galápagos Islands, specifically inhabiting the arid lowlands of the outer islands. Its distribution includes Española, Genovesa, Marchena, Pinta, Pinzón, San Cristóbal, Santa Fe, and Wolf. This species occupies a drier, more open habitat compared to its cl...
Least Concern
- The Grey Warbler-Finch is the smallest of all 18 species of Darwin's Finches. - Its common name highlights its striking resemblance to Old World warblers, a remarkable example of convergent evolution. - Once considered conspecific with the Green Warbler-Finch (*Certhidea olivacea*), genetic stu...