g20 CANADIAN WARBLER. 



edged with greenish. Iris, feet and bill, brown, the latter paler on lower mandible. Adult female, similar 

 to the male, but with the black of the head less e.xtended and rai.xed with yellow. Young, like the female. 

 Autumnal birds do not differ mucli from the spring dress. 



OBSERVATIONS. 



We have no other warbler with which this species can be confused, for no other has the black top to 

 the head combined with the yellow under parts. Occurs during the breeding season tliroughout Eastern 

 and Northern North America from Northern United States north to Hudson's Bay, and on the west tu the 

 Arctic coast. Winters in Eastern Mexico and Central America. 



DIMENSIONS. 



Length, from 4.75 to 5.00; stretch, 6.75 to 7.0L) ; wing, -J.Oi) to 'J L'5 ; tail, 2.10 to 2.20; bill, .o2 to .35 ; 

 tarsus, .65 to .70. 



DESCRIPTION OF NESTS AND EGGS. 

 Nests, placed on the ground, composed of leaves and grasses, lined with finer grasses and hairs. Eggs, 

 four or five in number, oval in form, varying from white to creamy white in color, spotted with reddish brown 

 and pale lavender, usually more thickly around the larger end. Dimensions, .60 by .48 to .62 by .50. 



HABITS. 



In Eastern North America we know Wilson's Warbler chiefly as a niii;;rant, although a 

 I'ew remain to breed in Northern Maine. These pretty little birds make their appearance 

 durinti; the second a,n(l third weeks of May in Eastern Massachusetts, frequenting willows 

 and alders alon"' water courses, and are not at all unconnnon some seasons. In move- 

 ment and color they (]uite closely reseniljle the Yellow Warbler and uidess o])served (juite 

 closely might be taken for that species. The song, however, is ((uite ditlerent from tliat 

 of the Yellow Warbler, consisting of a series of tlu'ee or four rather har.sh "zeeing" notes. 

 My experience with this species in spring tends to show that it does not linger when mi- 

 grating at that season, but passes through our section quite hurriedly, after occupying a 

 day or two only in its northern passage through Eastern Massacluisetts. It is much less 

 hurried when southward bound, l)ut is then rather rare in Massachusetts. I found thim 

 at Watsontown, Pennsylvania, as early as August 30th, 1875, and they lingered, or 

 rather perhaps it may be better to say, continued passing until the 28th of Septemljer,, 

 upon which date I find that I have recorded taking two individuals. 



SYLVANIA CANADEMSIS. 

 Canadian Warbler 



DESCRIPTION. 



Sp. Ch. Size, medium. Tail, without white spots. Color. Adult male. Above, slaty blue. Wings- 

 and tail, brown, edged with bluish. There are numerous lanced shaped black spots on the top of the head 

 which are usually crowded and continuous on the forehead. A narrow line through the black of the forehead, 

 a short line from base of upper mandible to eye, a ring around eye and under parts, ( excepting under tail 

 coverts, which are white ) bright yellow. Line in front of eye and under it, extending down on ear coverts, 

 then broadening up into spots which extend in a broad line across breast, forming a necklace, black. Iris 

 and bill, brown, feet pale brown. Female, similar but paler and with the black markings less decided. 



