John Gould

John Gould (14 September 1804 – 3 February 1881) was an English ornithologist (bird scientist). The Gould League (a bird group) started in Australia in 1909, was named after him. His knowledge of the birds now called "Darwin's finches" was a turning point in the Charles Darwin's thinking about evolution by natural selection. They are barely mentioned in Charles Darwin's book, On the Origin of Species.

John Gould Media

Calliope Tschebaiswi Prjer (Thrush Family) by John Gould
A studio photograph (c. 1860)
The Zoology of the voyage of H.M.S. Beagle : under the command of Captain Fitzroy, R.N., during the years 1832 to 1836, edited and superintended by Charles Darwin. [Album view] Pl. no. 7, Pyrocephalus nanus held by the State Library of New South Wales digital reference number a1417005h
Platypus from The Mammals of Australia (1845–63)
Letter from John Gould to R. Denny regarding Australian plants
Phaethornis Pretrei, the Planalto Hermit, Brooklyn Museum