“This little bird was by mistake engraved, and named after my friend W. Swainson, Esq., during my absence from London, one drawing having been accidentally substituted for another.  It is in reality the young of the Black and Yellow Warbler, and was intended to form part of the Plate which will represent the adult male and female of that species.  My good friend will, I know, excuse this mistake, as I have honoured a beautiful new species with his name.

… you will permit me, kind reader, to postpone the habits of this species until you see the whole group together.”

–J. J. Audubon, Ornithological Biography, I (1831), 260 [excerpted].