Work With Darwin
When Charles Darwin presented his mammal and bird specimens collected during the second voyage of HMS Beagle to the Geological Society of London at their meeting on 4 January 1837, the bird specimens were given to Gould for identification. He set aside his paying work and at the next meeting on 10 January reported that birds from the Galápagos Islands which Darwin had thought were blackbirds, "gross-bills" and finches were in fact "a series of ground Finches which are so peculiar" as to form "an entirely new group, containing 12 species." This story made the newspapers. In March, Darwin met Gould again, learning that his Galápagos "wren" was another species of finch and the mockingbirds he had labelled by island were separate species rather than just varieties, with relatives on the South American mainland. Subsequently Gould advised that the smaller southern Rhea specimen that had been rescued from a Christmas dinner was a separate species which he named Rhea darwinii, whose territory overlapped with the northern rheas. Darwin had not bothered to label his finches by island, but others on the expedition had taken more care. He now sought specimens collected by captain Robert FitzRoy and crewmen. From them he was able to establish that the species were unique to islands, an important step on the inception of his theory of evolution by natural selection. Gould's work on the birds was published between 1838 and 1842 in five numbers as Part 3 of Zoology of the Voyage of H.M.S. Beagle, edited by Charles Darwin.
Read more about this topic: John Gould
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