Mayhew 1952 May 16 Gray Lodge Refuge, Sutter Co., Calif. Relative humidity - 31% Temperature - 29°C. Air R.H. - 31 Air Temp. - 28°C. Nest 17 - 5 eggs; some down present. This nest was beside the road in volunteer gain about 30" high. A pond is about 50 yards away. The ♀ flushed as we arrived. R.H. - 28% Temp. - 31°C. Nest 21 - 8 eggs; no down. The ♀ flushed at our arrival. Nest is in cover at side of road. R.H. - 33% Temp. - 32°C. Nest 13 - 9 eggs; some down. This nest is about 15 feet from nest 21. The ♀ was gone when we arrived. R.H. - 26% Temp. - 34.5°C. Nest 11 - 7 eggs; some down. The ♀ was flushed, + the reading taken within 30 seconds of her flushing. This nest is on the ditch bank just west of refuge headquarters. The weeds forming cover are growing rather densely & about 36" high. A road that is used a great deal passes within 10 feet of this nest. R.H. - 30% Temp. - 33°C. Mallard 36.