Mayhew 1949 Aug. 12 Conaway Ranch, 2 miles east of Woodland, Yolo Co., Calif. Journal 24. When we had covered all the rice on the ranch, we flew over all sloughs, ditches, etc. that might contain ducks. As we were able to count blackbirds, stilts, shrikes, etc. from this altitude, we don't feel that we missed many ducks. Miller counted 54 Mallard + 28 Cinnamon Teal from his side — I counted 156 Mallard + 15 Cinnamon Teal on my side. This made a total of 210 Mallard + 43 Cinnamon Teal found on the ranch. As there is approximately 5000 acres of rice on the ranch, this would mean about 1 duck for every 19.7 acres, or 1 Mallard for every 23.8 acres. 1950 Feb. 26 Conaway Ranch, 2 miles east of Woodland, Yolo Co., Calif. Today I drove over the southern half of the ranch to see how many Mallards were in the area by now. We have been having regular May weather for the past 10 days or so, so I wanted to see how this early warm weather affected the bird population. There were large numbers of ducks on several ponds that were formed by the earlier rains. These groups were made of several species — principally Mallard, Pintail, Green-winged Teal, Baldpate, + a few Cinnamon Teal. The species of bird