102 CHIEF CHAFF. 



the usual colour, and the sixth pure white. The shell is very thin, and 

 but little polished. The eggs are laid towards the middle or end of 

 May, and the young birds are fledged about the middle of June: they 

 quit the nest early. 



Incubation lasts thirteen days, and the male occasionally relieves the 

 female at her post. Two broods are sometimes reared in the season. 



