Mayhew 1949 July 26 Conaway Ranch, 2 miles east of Woodland, Yolo Co., Calif. spot I hadn't located, but I still am unable to see them in any numbers. Aug. 4 This nest was just as I saw it nearly 25 a month ago. The 2 eggs were still there, but the f had apparently long since gone. One egg was infertile & the other contained a duckling that was beginning to feather. I assume that the exposed position of the nest caused the death of the youngster rather than desertion by the f, since she was flushed from the nest 3 weeks after the grain had been cut around the nest. It is logical to assume that the heat of the sun beating directly on the eggs when the f was off the nest could kill the young while still in the shell. 1950 Feb. 26 Conaway Ranch, 2 miles east of Woodland, Yolo Co., Calif. This afternoon I found one flock of 25 Mallards with 1 or Pintail in the tules of the drainage ditch at the southern border of the ranch. The flock was made up mostly of ♂, but there were some f present. There is no sign of territories yet for the birds of this flock, because the entire group flew out of sight when I got out of the car. Farther down the drainage ditch I flushed several more in company with