Actor Richard Dysart--a.k.a. senior partner Leland McKenzie of NBC's "L.A. Law"--was upstaged Wednesday by a one-eyed owl while shooting some public service announcements for the Maine Audubon Society. Samy, a barred owl that was nursed back to health after being hit by a truck, winked at a stuffed fox displayed in the background, exactly on cue. "I was upstaged . . . What are you gonna do?" said Dysart, 58, who volunteered to participate in the Audubon project while on a Christmas visit to family members in his native Maine.