Mayhew 1947 Mar. 15 Baldpate 1. Lake Merritt, Oakland, Alameda Co., Calif. at 9:30 A.M. a pair of this species came very near to where we were sitting. The white crown + green patch on the side of the head of the ♂ was very much in evidence. Also, a white flank patch could be easily seen. Both the ♂ + ♀ had grey colored bill with a black tip. The ♀ was very plain (brown speckled). They didn't appear to be feeding. at 9:45 A.M. a large flock of Baldpates were seen feeding on the lawn about 50' away from the lake. They were eating grass, which they cropped off with a side-wise movement. In flight, large white wing patches were seen in the wings of a ♂ that passed overhead. at 10: A.M. another pair were seen swimming past. They seemed to swim with a rocking motion. at 10:10 A.M. a number of Baldpates flew overhead. The ♀'s white wing patch isn't nearly as prominent as that of the ♂. 1950 May 30 Conaway Ranch, 2 mi. east of Woodland, Yolo Co., Calif. 3 ♂ were seen swimming in some open water between patches of tules in the main drainage ditch that forms the southern boundary of the ranch. They were seen just west of the S-turn in the ditch.