Mallard 31. Mayhew 1950 July 1 Conaway Ranch, 2 mi. east of Woodland, Yolo Co., Calif. [3] a ♀ and 8 young about 4 weeks old were seen in the main drainage ditch forming the south boundary of the ranch. Two other ♀ were seen during the afternoon, but no other youngsters, nor any ♂ were seen. July 19 While walking rice levees this morning I saw 2 ♀, but no sign of young with them. A ♀ with 2 youngsters as large [4] as she was were seen in the main ditch. Aug. 12 This morning Lee Baldock & I flew the annual duck census on the Conaway Ranch. When we added the totals, we had counted 184 Mallards + 62 teal. The flight was made in a Piper Cub, flying 75 miles per hour at between 150 & 200 feet. 1951 May 11 Today I covered the rice areas & the ditches of the Conaway to see how many ducks were there. The rice fields have just been flooded - in fact, some were in the process of being flooded. The great majority of the ducks seen were either resting on rice levees or were seen swimming in the rice ditches. A total of 225 Mallards were seen today. Of this number, 116 were ♂, 32 were ♀, & 77 were too far away to determine the sex. All the ♀ seen were closely accompanied