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The common cactus finch or small cactus finch (Geospiza scandens) is a species of bird in the Darwin's finch group of the tanager family Thraupidae. It is endemic to the Galapagos Islands , where it is found on most islands, with the notable exception of Fernandina , Española , Genovesa , Darwin and Wolf .
Medium ground finches have a better chance of survival in their habitat than small ground finches, due to their beak size. [18] The beak size of medium ground finches can evolve in a relatively short period of time, depending on if it is a wet season or dry season. [19] Survival and beak size of the birds are fueled by the environment.
The Española cactus finch is among the largest of the Darwin's finches, measuring 15 cm (5.9 in) in length. The male is black, with white-tipped undertail coverts. Female and immature birds range in color from dull gray to matte black, and frequently show white edges to the feathers of their underparts.
Large ground finch (Geospiza magnirostris)The Daphne Major finches are a group of Darwin's finches that inhabit Daphne Major island of the Galápagos.The common cactus finch (Geospiza scandens) and the medium ground finch (G. fortis) are the main species; [1] while the large ground finch (G. magnirostris) and the Española cactus finch (G. conirostris) are regular immigrants. [2]
The Genovesa cactus finch (Geospiza propinqua) is a species of bird in the tanager family Thraupidae. It is one of Darwin's finches, and is endemic to the Galápagos islands, Ecuador, where it is restricted to Genovesa Island. Its natural habitat is dry shrubland and it is commonly seen on the ground. Its main food source is the cactus Opuntia.
The term "Darwin's finches" was first applied by Percy Lowe in 1936, and popularised in 1947 by David Lack in his book Darwin's Finches. [ 7 ] [ 8 ] Lack based his analysis on the large collection of museum specimens collected by the 1905–06 Galápagos expedition of the California Academy of Sciences, to whom Lack dedicated his 1947 book.
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Genovesa cactus finch; Genovesa ground finch; L. ... Small ground finch; V. Vampire ground finch This page was last edited on 1 March 2019, at 01:23 (UTC). ...