Il8 YELLOW WARBLER 



the following, with a descending intonation: Tsweet, tsweet, tsweet- 

 tsee-tsee-tsee-tsee-tsee-tsee. The only note I have heard uttered in 

 flight is the sibilant chirp mentioned above, one of the characteristic 

 sounds of late summer." {Allison, MS.) 



Two songs are thus written by Miss Paddock : 



^/..Fj.Fj'^ I ^ 



v*: ^ 



Nesting Site. — Usually in bushes, saplings, or briers three to 

 eight feet up, but not infrequently in trees as high as forty feet up. 



Nest. — Compact, symmetrical, and well-woven, of silver-gray 

 hempen fibers and fine grasses with a conspicuous amount of plant- 

 down; lined with cottony plant-down, fine grasses, sometimes hair or 

 a few feathers. Bowles states that nests of this species found at 

 Tacoma, Washington, often have a heavy lining of feathers. This 

 is the only bird that has the habit of building a second and, when the 

 necessity arises, a third story to its nest to cover the unwelcome &gg of 

 the Cowbird. 



Eggs. — 4 or 5, usually 4, in a large series of sets, one contain- 

 ing 6 eggs occurs, but two-thirds have four eggs each. Ground color 

 ranges from grayish and greenish white to a rich green shade, over 

 this are markings of umber brown, blackish, lilac-gray, and purplish- 

 brown in all varieties of spots, splashes, and blotches, always tending 

 to wreathe around the large end, but many are heavily marked all 

 over. Size ; average, .68X.50 ; extremes, .75X.52, .60X.48. .73X.53, 

 .62X.47. (Figs. 39-41.) 



Nesting Dates. — Burning Springs, W. Va., May 14 (C. W. C.) ; 

 Waynesburg, Pa., May 14- June 10 (Jacobs) ; New York City, May 

 20- July 4 (building) (F. M. C.) ; New Haven, Conn., May 20- June 

 30 (Bishop) ; Cambridge,Mass., full sets, first laying, May 23-30 

 (Brezvster) ; Lancaster, N. H., June 7 (Spaulding) ; Bangor, Me., 

 May 29-June 30 (Knight) ; Listowel, Ont., June i-June 22 (Kelts) ; 



