In this 18th installment, clues from turkey vultures lead
an English ornithologist to discover the ominous activity at a local airport in sleepy Colleton County, NC, where Knott is a judge.
Through careful analysis of Darwin's notes and journals, Sulloway dates Darwin's acceptance of the fact of evolution to the second week of March 1837, after a meeting Darwin had with the eminent
English ornithologist John Gould, who had been studying his Galpagos bird specimens.