Mayhew 1950 Mallard 27. May 13 Conway Ranch, 2 mi. east of Woodland, Yolo Co., Calif. I saw one ♂ flying over the grain when I first arrived, but saw no other sign of Mallards near the grain fields. a few groups of ♂, numbering from 2 & 6, were seen in the main drainage ditch + also in the fields flooded for rice, but I also saw several pairs scattered over the ranch, so I don't think all the ♀ are nesting yet. May 14 at 4:45 A.M. I was parked beside the wheat field. (The sun arose at 5:10 A.M.) a few birds were flying over the fields when I arrived, but the number rapidly increased in about 20 minutes - just about sun-up. Birds were flying about singly, in pairs, + in groups up to 9. One ♀ + 8 ♂ were seen flying over. Of this entire group I saw only one pair land in the grain field, + these landed along a ditch at the edge of the field. By 5:45 A.M. practically all the ducks had disappeared. The great majority of the birds seen flying over this morning were ♂. I saw no single ♀, and only 3 or 4 pairs. May 20 I covered another 2 miles of wheat this morning, looking for nests, but found none. This makes a total of 6 miles of wheat that I have walked without a sign of a nest. I saw a pair flying over the wheat for a while, then the ♀ dropped in + the