Remsen, J.V. 1975 Trumpeter Swan Olor buccinator Jan. 5 Legg Lake, El Monte, Los Angeles Co., Calif: I ad. in the northernmost lake. It had apparently been there for almost a week, and the identification had been agreed upon by all who saw the bird. The bill was conspicuously huge - an exaggerated, Canvasback-like shape immediately recognizable as different from the slimmer, shorter-billed Whistling. The pinkish coloration on the base of the lower mandible was also readily apparent. The bird was foraging with submerged neck in shallow water. Jan. 15 After seeing and studying hundreds of Whistling Swans today, I am more convinced than ever that the Legg Lake bird was Trumpeter - the concavely curved upper mandible of Whistling differed greatly from the virtually straight outline of the upper mandible of the Legg Lake bird.