Title: Darwin's finches
Content:  world but closely allied to those found on the South American continent. Darwin now saw that, if the finch species were confined to individual islands, like the mockingbirds, this would help to account for the number of species on the islands, and he sought information from others on the expedition. Specimens had also been collected by Captain Robert FitzRoy, FitzRoy's steward Harry Fuller, and Darwin's servant Covington, who had labelled them by island. From these, Darwin tried to reconstruct the locations from where he had collected his own specimens. The conclusions supported his idea of the transmutation of species.
Title: Darwin's finches
Content:  terms of "centres of creation" and rejected ideas concerning the transmutation of species. From Henslow's teaching, he was interested in the geographical distribution of species, particularly links between species on oceanic islands and on nearby continents. On Chatham Island, he recorded that a mockingbird was similar to those he had seen in Chile, and after finding a different one on Charles Island he carefully noted where mockingbirds had been caught. In contrast, he paid little attention to the finches. When examining his specimens on the way to Tahiti, Darwin noted that all of the mockingbirds on Charles Island were of 
Title: Galápagos Islands
Content:  observations on the geology and biology on Chatham, Charles, Albemarle and James islands before they left on 20 October to continue on their round-the-world expedition. Primarily a geologist at the time, Darwin was impressed by the quantity of volcanic craters they saw, later referring to the archipelago as "that land of craters". His study of several volcanic formations over the five weeks he stayed in the islands led to several important geological discoveries, including the first, correct explanation for how volcanic tuff is formed. Darwin noticed the mockingbirds differed between islands, though he thought the birds now known as Darwin's finches were unrelated to each 
Title: Darwin's finches
Content:  Darwin's finches (also known as the Galápagos finches) are a group of about 18 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 the 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 others are found only on the Galápagos Islands. The 
Title: Galápagos Islands
Content:  and did not bother labelling them by island. Nicholas Lawson, acting Governor of Galápagos for the Republic of Equator, met them on Charles Island, and as they walked to the prison colony, Lawson told Darwin the tortoises differed from island to island. Towards the end of the voyage, Darwin speculated that the distribution of the mockingbirds and the tortoises might "undermine the stability of Species". When specimens of birds were analyzed on his return to England, it was found that many apparently different kinds of birds were species of finches, which were unique to islands. These facts were crucial in Darwin's development of his theory 
Title: Darwin's finches
Content:  species, those from Albemarle of another, and those from James and Chatham Islands of a third. As they sailed home about nine months later, this, together with other facts, including what he had heard about Galápagos tortoises, made him wonder about the stability of species. [[File:Finchadaptiveradiation.png|right|thumb|upright=1|Seen here is adapted 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 
Title: The Beak of the Finch
Content:  The finches of the title are the Galapagos or 'Darwin's Finches,' passerine songbirds in the Galapagos Islands. The species are so distinct that when Charles Darwin collected them in the islands he thought they were completely different birds, and it was only when he was back in London in 1837 that the ornithologist John Gould revealed that they were closely allied, reinforcing Darwin's growing view that “species are not immutable.” The adaptations of their numerous species, in three genera, show diverging evolution to exploit several ecological niches in the rugged and dry Galápagos Islands. Weiner follows the career of two biologists, Peter and Rosemary Grant, who have spent twenty years proving that 
Title: Inception of Darwin's theory
Content:  finch specimens, he examined FitzRoy's in the British Museum and contacted seamen including Syms Covington for their collections. From this he was able to relate the finches to separate islands, with distinct species on each island. As well as pressing on with his Journal, he started an ambitious project to get the expert reports on his collection published as a multi-volume Zoology of the Voyage of H.M.S. Beagle. A search for sponsorship was answered when Henslow used his contacts with the Chancellor of the Exchequer Thomas Spring Rice to arrange a Treasury grant of £1,000, a sum equivalent to about £0 in present-day 
Title: Daphne Major
Content:  Daphne Major is a volcanic island just north of Santa Cruz Island and just west of the Baltra Airport in the Archipelago of Colón, commonly known as the Galápagos Islands. It consists of a tuff crater, devoid of trees, whose rim rises 120 m above the sea. Though easily accessible to most visitors to the Galápagos, the national park service has highly restricted visits to this island, and it is primarily used for scientific research. An intensive study of Darwin's finches was conducted here by biologists Peter and Rosemary Grant over a period of 20 years. They examined the behaviour and life cycles of finches, demonstrating the role of natural selection in producing biological evolution. Their efforts were documented in the Pulitzer Prize–winning book The Beak of the Finch. Daphne is home to a variety of other birds including Galápagos martins, blue-footed booby, Nazca booby, short-eared owls, red-billed tropicbirds and magnificent frigatebirds.
Title: Darwin's finches
Content:  1. Geospiza magnirostris 2. Geospiza parvula 3. Certhidea olivacea 4. Geospiza fortis]] Following his return from the voyage Darwin presented the finches to the Zoological Society of London on 4 January 1837, along with other mammal and bird specimens that he had collected. The bird specimens, including the finches, were given to John Gould, the famous English ornithologist, for identification. Gould set aside his paying work and at the next meeting, on 10 January, reported that the birds from the Galápagos Islands that Darwin had thought were blackbirds, "gross-beaks" and finches were actually "a series of ground Finches which are 

Question: what islands did darwin study finches on?
Answer: The purpose of the expedition, which lasted for nearly four years, was to survey the east and west coasts of South America, but it also took in the Cape Verde Islands, the Galapagos, Tahiti, New Zealand, Australia, Mauritius and South Africa.