BLACKCAP 89 



streaks of olive, dusky, and dark brown. They are subject 

 I 



to considerable variation. Some are marbled with deeper 



shades of reddish brown ; white ones have at times been 

 found. They vary a good deal in size and shape. 



Both birds sit on the eggs, but the female naturally 

 the most. The male often sings while so engaged, and 

 thus not unfrequently betrays the position of the nest. 

 The female, when sitting, is occasionally fed by her partner. 

 The young leave the nest rather soon, roosting with their 

 parents on the adjoining boughs. 



VOL. II. 



