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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.
The large ground finches have diverse food options. They eat mainly large seeds, and also pick Opuntia cactus fruits, caterpillars and large insects. They usually feed on seeds of Tribulus cistoides and, less commonly, on seeds of Bursera graveolens. They search for food most of the time on the ground. The adults feed their chicks mainly with ...
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]
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 finch 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.
Four of Darwin's finches, clockwise (from top left): Geospiza magnirostris, Geospiza fortis, Certhidea fusca, Camarhynchus parvulus. Genus Geospiza. Genovesa ground finch (Geospiza acutirostris) Española cactus finch (Geospiza conirostris) Sharp-beaked ground finch (Geospiza difficilis) Vampire finch (Geospiza septentrionalis)
The genus Geospiza was introduced in 1837 by the English ornithologist John Gould with the large ground finch as the type species. [1] [2] The genus name derives from the two Ancient Greek words γῆ (gê), meaning "earth", and σπίζα (spíza), a catch-all term for finch-like birds.
Sharp-beaked ground finch: Geospiza difficilis Sharpe, 1888: 93 Genovesa ground finch: Geospiza acutirostris Ridgway, 1894: 94 Vampire ground finch: Geospiza septentrionalis Rothschild & Hartert, EJO, 1899: 95 Espanola cactus finch: Geospiza conirostris Ridgway, 1890: 96 Genovesa cactus finch: Geospiza propinqua Ridgway, 1894: 97 Large ground finch
The Española cactus finch (Geospiza conirostris), is a species of bird in the tanager family Thraupidae. It is one of Darwin's finches , and is endemic to the Galápagos islands, where it is restricted to Española, Genovesa, and the Darwin and Wolf Islands.