Mayhew 1952 Cinnamon Teal 2. May 1 Conaway Ranch, 2 mi. east of Woodland, Yolo Co., Calif. on the nest until I was within 3 feet of the nest. I don't think I would have even seen the nest if she had remained on it. Two of the eggs were taken for the museum collection, & on blowing them, it was found that incubation had begun, but had not been going on very long. Humidity & temperature readings were taken at the nest, but the hen had been off the nest approximately 1 hour before I got the instruments to the nest. Since the nest had little down to maintain humidity & temp., the readings naturally were very close to readings taken on the ground nearby. However, the readings were: Relative humidity - 45% Temperature - 21°C. Readings taken waist high: R.H. - 52%. Temp. - 18°C. I think the reason the R.H. was higher in the air was that the same amount of moisture was present from the ground up, but since the air temp. was lower, this would make the relative humidity higher at waist height.