370 BIRDS OF ONTARIO. 



It is a regular visitor in spring and fall, and though not abundant is 

 very generally distributed. 



A few have been observed in Manitoba, and it has also been 

 reported as a straggler in Labrador, but from its lingering late in 

 the spring in Southern Ontario, and appearing again early in Sep- 

 tember, the bulk of the species probably does not go much farther 

 north to spend the summer. In the Auk, Yol. II., page 103, Dr. 

 Merriam gives an account of a nest of this species which he found 

 in Lewis County, N.Y., on the 2nd of June, 1879. It was saddled 

 on a limb of a large pine, eighty-four feet from the ground, and 

 contained four fresh eggs of the owners of the nest and one of the 

 Cowbird. 



One of the few errors made by Wilson was his description of 

 the young of this bird as a separate species, which he named the 

 Hemlock Warbler. In this he was for a time followed by other 

 writers, till further observations brought out the truth. 



Like most of its class, this species crosses the southern frontier in 

 May, and is again seen passing south in September. 



DENDROICA VIRENS (GMEL.). 

 278. Black-throated Green Warbler. (667) 



J\Iale in spring: Back and crown, clear yellow-olive; forehead, superciliary 

 line, sides of head, rich yellow (in very high plumage, middle of back with 

 dusky marks, and dusky or dark olive lines through eyes, auriculars, and even 

 bordering the crown) ; chin, throat and breast, jet black, prolonged behind in 

 streaks on the sides ; other under parts, white, usually yellow-tinged ; wings 

 and tail, dusky, the former with two white bars and much white edging, the 

 latter with outer feathers nearly all white ; bill and feet, blackish ; male in the 

 fall and female in the spring similar, but black restricted, interrupted or veiled 

 with yellow. Young: Similar to the female, but the black more restricted or 

 wanting altogether, except a few streaks along the sides. Length, about 5 ; 

 wing, 24; tail, 2|. 



HAB. Eastern North America to the Plains, north to Hudson's Bay Terri- 

 ritory, breeding from the Northern United States northward. In winter, south 

 to Cuba and Panama. Accidental in Greenland and Europe. 



Nest, small, neat, compact, placed in a fork of a pine tree, near the end of a 

 branch, often twenty to fifty feet from the ground ; composed of twigs, strips of 

 vine bark and dried grass, and lined with vegetable fibre and horse hair. 



Eggs, three or four, creamy-white, marked with reddish-brown and lilac, 

 mostly toward the larger end. 



