THE BLACK AND YELLOW WARBLER. 



239 



mute spots; the spots on the under parts much fewer; upper parts dirty-ash, tinged 

 with greenish on the lower back; on the rump dull-yellow. 



Male, in autumn. Bill brown, lighter along the edges and base of lower man- 

 dible; head and hind neck dirty-ash, tinged above with green; back greenish- 

 yellow, obsoletely spotted with black; rump yellow; throat and breast yellow, 

 obsoletely spotted with black, strongly tinged with light-ash on the lower throat; 

 eyelids dirty-white ; differs from the spring plumage in being without the black on 

 the back, front, sides of the head and cheeks, and in a great degree on the under 

 parts; much less white on the wing and side of the head; the colors generally 

 also are duller. 



Female, in autumn. Similar, generally, to the male in fall. Back greenish- 

 yellow, brighter on the rump; rest of upper parts deep-ash; lower parts yellow, 

 obsoletely streaked with black, the light-ash on the lower throat decided; the 

 white on the wings reduced to two narrow bands. There is a continuous white ring 

 round the eye; bill light brown; basal part of lower mandible dirty- white; feet 

 lighter brown. 



Specimens vary somewhat in the amount of black on the under parts. 



Length, five inches ; wing, two and fifty one-hundredths ; tail, two and twenty-five 

 one-hundredths inches. 



This beautiful bird is not uncommon in the migrations 

 in the three southern New-England States, and is a summer 

 resident in the others. It does not make its appearance 

 before the 10th of May, and 

 proceeds slowly in its travels. 

 I found numbers in Northern 

 Maine and New Hampshire as 

 late as the 17th of June. They 

 were industrious, and seemed to 

 be, at that late date, but just 

 mating. Hence I infer that they 

 rear but one brood, and not until 

 late in the season. 



The note of the male is very 

 similar to that of the Chestnut- 

 sided Warbler ; aiid I was de- 

 ceived by it into mistaking this 

 for that species. It had the hab- 

 its of that bird also, and seemed Lower fig., mac* 

 to prefer the low, swampy woods to the higher ones. 



Although I looked very carefully and diligently for the 

 nest, I could not find it. From the fact that the birds were 



Upper fig., Yellow Warbk 

 ind Yellow \1 



