THE WESTERN CHIPPING SPARROW. rae 
to the tree-tops in straggling fashion, and there either await the withdrawal 
of the intruder, or else make off at a good height. 
The song of the Tree Sparrow is sweet and tuneful, affording a 
pleasing contrast to the monotonous ditty of the Western Chipping Sparrow. 
Snatches of song may be heard, indeed, on almost any mild day in winter; 
but the spring awakening assures a more pretentious effort. A common 
form runs, Swee-ho, sweet, sweet, sweet, with notes of a most flattering 
tenderness. But we may only guess at the bird’s full powers, for the home- 
making is in Alaska. 
No. 50. 
WESTERN CHIPPING SPARROW, 
A. O. U. No. 560a. Spizella passerina arizonz (Coues). 
Synonyms.—Cutrpy. HaArr-Birp. 
Description.—4 du/t: Crown bright chestnut; extreme forehead black with 
ashy median line; a light ashy superciliary stripe; lore and postocular streak 
black; underparts and sides of head and neck ashy gray, dullest on breast and 
sides, clearest on throat where nearly white; hind-neck and wings bluish ash, 
the former more or less streaked with blackish; back and scapulars light brown 
(isabella color) heavily streaked with black; wings and tail fuscous. Bull dark; 
feet light; iris brown. Young birds are streaked with dusky above and below 
and lack the chestnut of crown. Length of adult males: 5.00-5.50 (127-139.7) ; 
wing 2.83 (72); tail 2.36 (60) ; bill .39 (10); tarsus .67 (17). Females smaller. 
Recognition Marks.—\Varbler size; chestnut crown and whitish superciliary 
distinctive. 
Nesting.—Nest: A compact or careless structure of fine twigs, grasses, and 
(most commonly and often exclusively) rootlets, heavily lined with horse-hair ; 
placed in sage-bush, wild rose thicket or shrubbery, or else on horizontal branch 
of apple tree or evergreen. Eggs: 3-5, usually 4, greenish blue speckled freely 
or in narrow ring about larger end with reddish brown and black. Av. size, 
7ixX.51 (18x13). Season: April-July, usually May and June; two broods. 
General Range.—Western North America from the Rockies to the Coast 
breeding from the southern border of the United States north to the Yukon 
Valley in Alaska, east over the western provinces of Canada; south in winter to 
Mexico and Lower California. 
Range in Washington.—Common summer resident thruout the State chiefly 
in settled portions and more open situations. 
Migrations.—S pring: Yakima, April 12, 1G00; Chelan, April 24, 18096; 
Tacoma, April 12, 1905, April 11, 1906. 
Authorities.—Spizella socialis Bonap. Baird, Rep. Pac. R. R. Surv. IX. 
Dosomenpant (Gl). C&s. Dt Ra. D2) Sst Kk J. BiB. 
Specimens.—U. of W. P'. Prov. B. E. 
