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THE NATURE-STUDY REVIEW 



16:3-Mar., 1910 



tinued until the young left the nest on the morning of May 28, 

 the fifteenth day. Several pieces of food were obtained and 

 identified through the courtesy of the state entomologist's offtce. 

 For the five days of full observation, the working dav — 

 meaning the period of activity of the parents at the nest — 

 averaged nearly 15 1-2 hours, from 4 a. m. to 7:30 p. m. At 



first the female brooded throughout the night, but toward the 

 end of the period, when the fairly fledged young filled the nest, 

 both parents were absent at night. The young were brooded on 

 their sixth day — at frequent intervals — for a total of 8 hours, or 

 somewhat more than half of the daylight period. Two thirds 

 of the feeding was done by the male. In contrast with this, 

 on the thirteenth day (May 26) the female did not settle once 

 during the day, nor did she spend the previous night or the 

 following night upon the nest. While near the nest, she perched 

 either on its edge or near by on the window-sill. Once she 

 stood over the nest. Usually, however, she left promptly after 



