Stock Photo: Dartford warbler with dusky brownish head and back, rust-colored breast. . . Sylvia undata (Sylvia dartfordiensis). . Edward Donovan (1768-1837) was an Anglo-Irish amateur zoologist, writer, artist and engraver. He wrote and illustrated a series of volumes on birds, fish, shells and insects, opened his own museum of natural history in London, but later he fell on hard times and died penniless.. . Handcolored copperplate engraving from Edward Donovan's "The Natural History of British Birds" (1794