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Seen here is adaptive radiation of finch A (Geospiza magnirostris) into three other species of finches found on the Galapagos Islands. Due to the absence of other species of birds, the finches adapted to new niches. The finches' beaks and bodies changed allowing them to eat certain types of foods such as nuts, fruits, and insects.
Finch. The true finches are small to medium-sized passerine birds in the family Fringillidae. Finches generally have stout conical bills adapted for eating seeds and nuts and often have colourful plumage. They occupy a great range of habitats where they are usually resident and do not migrate. They have a worldwide native distribution except ...
The American goldfinch ( Spinus tristis) is a small North American bird in the finch family. It is migratory, ranging from mid- Alberta to North Carolina during the breeding season, and from just south of the Canada–United States border to Mexico during the winter. The only finch in its subfamily to undergo a complete molt, the American ...
Description. juvenile L. p. punctulata, Sri Lanka. The scaly-breasted munia is about 11–12 centimetres (4.3–4.7 in) long and weighs 12–16 grams (0.026–0.035 lb). The adult has a stubby dark bill typical of grain eating birds, brown upperparts and a dark brown head. The underparts are white with dark scale markings.
Burrica mexicana. Carpodacus mexicanus. The House finch ( Haemorhous mexicanus) is a North American bird in the finch family. It is native to Mexico and southwestern United States, but has since been introduced to the eastern part of North America and Hawaii; it is now found year-round in all parts of the United States and most of Mexico, with ...
The medium ground finch ( Geospiza fortis) is a species of bird in the family Thraupidae. It is endemic to the Galapagos Islands. Its primary natural habitat is tropical shrubland. One of Darwin's finches, the species was the first which scientists have observed evolving in real-time. Many studies and research have been conducted on medium ...
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