YELLOW-BROWED WARBLER. 447 



form it is ca true Willow- Wren's nest, a rather large globular 

 structure, with the entrance at one side. Regarding the first 

 nest taken, I have noted that it was placed on a sloping bank, 

 on the ground, among some low ferns and other plants, and 

 close to the root of a small broken fir tree, which, being some- 

 what inclined over the nest, protected it from being trodden 

 upon. It was composed of coarse dry grass and moss, and 

 lined with finer grass and a few black hairs. The cavity 

 was about two inches, and the entrance about one and a half 

 inch in diameter." The same gentleman describes more or 

 less fully ten nests which he obtained. They all possessed 

 the same characteristics, but one had a few feathers in the 

 outer portion. The first nest taken by Capt. Cock was 

 " thickly lined with hair of the musk-deer." Mr. Brooks 

 says that the eggs measure from "62 to '52 by from "45 to 

 •43 in. "The ground-colour is always pure white, more or 

 less spotted with brownish red — tlie spots being much more 

 numerous, and frequently in the form of a rich zone or cap, 

 at the larger end. Intermixed with the red spots are some- 

 times a few of purple-grey. Other eggs are marked with' 

 deep-purple-browu spots, like those of the Chifichafi", and the 

 spots are also intermingled with purple-grey. Some eggs 

 are boldly and richly marked, while others are minutely 

 spotted. The egg also varies in shape ; but as a general 

 rule they are rather short and round, resembling in shape 

 those of P. trochilus.''* 



Mr. Hancock's description of his specimen is as follows :— 

 " Length, 4tV iii- ; breadth, 6^ in. ; length from the carpus 

 to the end of the wing, 2i^6 in. ; tail, IxV in.; the bill from 

 the gape to the tip nearly xV, and from the tips of the 

 feathers, which extend to the extremity of the nostrils, ^ in. 



" The whole of the upper plumage a greenish yellow ; on 

 the centre of the crown of the head is a streak of paler ; a 

 light lemon-coloured streak extends over the eye from the 

 base of the bill to the occiput ; a short streak of the same 



* Some of the eggs thus obtained l)y Mr. Brooks wci"e exhibited by Mr. Dresser 

 iu the Zoological Society, January 16th, 1872; and others, now in the Editors 

 l)ossession, fully agree with the desuriijtion above given 



