Peter Beard, a New York photographer, artist and naturalist to whom the word “wild” was roundly applied, both for his death-defying photographs of African wildlife and for his own much-publicized days — decades, really — as an amorous, bibulous, pharmaceutically inclined man about town, was found dead in the woods on Sunday, almost three weeks after he disappeared from his home in Montauk on the East End of Long Island. He was 82.