A tour of the Washington Heights and Harlem neighborhoods with the aid of an Audubon map amounts to a new sort of bird-watching. It takes a search to track down the Williamson’s sapsucker, bigger than life, down by the West Side Highway. The black-billed magpie is visible all day now on the Broadway gates of the defunct New Happiness Chinese Restaurant. Elsewhere, Audubon himself is rendered in flesh tones and with mutton-chop sideburns, staring curiously at a cerulean warbler on his shoulder with neither his rifle nor palette at hand.