darwin finches refers to a group of which creature
passerine birds
title: Darwin's finches text: Darwin's finches Darwin's finches (also known as the Galápagos finches) are a group of about fifteen species of passerine birds. They are well known for their remarkable diversity in beak form and function. They are often classified as the subfamily Geospizinae or tribe Geospizini. They belong to the tanager family and are not closely related to the true finches. The closest known relative of the Galápagos finches is South-American "Tiaris obscurus." They were first collected by Charles Darwin on the Galápagos Islands during the second voyage of the "Beagle". Apart from the Cocos finch, which is from Cocos Island, the title: Darwin's finches text: these changes in the beak size have also altered vocalization in Darwin's finches. Darwin's finches Darwin's finches (also known as the Galápagos finches) are a group of about fifteen species of passerine birds. They are well known for their remarkable diversity in beak form and function. They are often classified as the subfamily Geospizinae or tribe Geospizini. They belong to the tanager family and are not closely related to the true finches. The closest known relative of the Galápagos finches is South-American "Tiaris obscurus." They were first collected by Charles Darwin on the Galápagos Islands during the second voyage of title: Finch text: Finch The true finches are small to medium-sized passerine birds in the family Fringillidae. Finches have stout conical bills adapted for eating seeds 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 distribution except for Australia and the polar regions. The family includes species known as siskins, canaries, redpolls, serins, grosbeaks and euphonias. Many birds in other families are also commonly called "finches". These groups include: the estrildid finches (Estrildidae) of the Old World tropics and Australia; some members of the Old World bunting title: Finch text: basket-shaped and usually built in trees, more rarely in bushes, between rocks or on similar substrate. The family Fringillidae contains 228 species divided into 50 genera and three subfamilies. The subfamily Carduelinae includes 18 extinct Hawaiian honeycreepers and the extinct Bonin grosbeak. Subfamily Fringillinae Subfamily Carduelinae Subfamily Euphoniinae Finch The true finches are small to medium-sized passerine birds in the family Fringillidae. Finches have stout conical bills adapted for eating seeds 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 distribution except for Australia title: Darwin's finches text: others are found only on the Galápagos Islands. 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". David 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. The birds vary in size from 10 to 20 cm and weigh between 8 and 38 grams. The smallest are the warbler-finches and the largest is the vegetarian finch. The most important differences between species are in