284 



CANADA WARBLER 



from the common run of Warbler 'chips.' The bird has also several 

 slighter and less distinctive calls." {Thayer, MS.) 



Miss Paddock sends notations of six songs and writes: "The 

 rhythm is not unlike the Yellow-throat's, but its quality is different, 

 and it is more energetic. The notes are always in triplets or groups 

 of four." 



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Nesting Site. — The Canada Warbler nests on the ground con- 

 cealing its nest in moss or beneath roots. 



Burtch (MS.) writes that "in Potter Swamp near Branchport, 

 N. Y., the nest is usually placed under the edge of a stump or log, or 

 in the side of a mound of moss covered with logs and brush. One 

 nest was placed on top of a moss-covered log, the lowest in a criss- 

 cross pile, another log being over it and forming a roof. In the gullies 

 the nest is placed from ten to thirty feet above the bottom of the gully, 

 in a hole in the moss-covered bank." 



Nest. — Burtch describes the nest as usually bulky and rather flat- 

 tened, made of dead leaves and grass, lined with fine grass. 



Eggs. — 3 to s, usually 4. Ground color and markings about like 

 the eggs of the Pileolated Warbler, except in the present species the 

 markings are not so profuse and less inclined to wreathe around the 

 large end, being more evenly distributed over the entire egg. Size; 

 average, .67X.52; extremes, .73X.53, .64X.54, .65X.51. (Figs. 119-121.) 



