274 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
As stated, tlie female is considerably duller, showing traces only of the black on the breast; 
the upper parts dull brownish, with darker streaks. Young birds are brown above, with 
dusky streaks ; beneath white, the breast and sides streaked with brown ; the yellow of the 
crown and rump distinct, that of the breast barely appreciable. A winter specimen, (7661,) 
marked male, has the under parts almost pure white, very obsoletely streaked with brown on 
the breast and sides ; the yellow of throat and breast rather distinct; two bands of white on 
the wings instead of one. 
List of specimens. 
Catal. 
No. 
Sex & 
age. 
Local tity. 
When collected. 
Whence obtained. 
Orig. 
No. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
2910 
Columbia river_ 
April 24 1836 
J. K. Townsend . 
2911 
Q 
5. 12 
8.75 
2909 
_do___ 
May 31, 1835 
_do _ __ 
7656 
April 20, 1856 
209 
6. 00 
9. 00 
7654 
Q 
5. 87 
9. 00 
7658 
o 
do _ _ 
July 28, 1856 
......do_ 
504 
7670 
___do _ _ 
Gov. Stevens_ 
81 
Dr. Suckley_ 
5. 75 
9. 50 
3. 75 
7671 
2 
May 1, 1856 
351 
6. 00 
9.00 
7672 
Shoal water hay 
June 20, 1854 
82 
5. 25 
8. 50 
7673 
_do _ _ _ 
Aug. 30, 1854 
_ _ _ _do 
86 
5.12 
8. 75 
7674 
_do__ 
_do.__ 
____do 
86 
5. 75 
9. 00 
7662 
Q 
Cali for nia ........ 
Dr. Heermann_ 
3728 
Wm. Hutton _ 
7660 
O 
7661 
7651 
Janos, Mex. ...... 
April —, 1855 
Maj. Emory_ 
67 
Dr. Kennerly _ 
7652 
Boca Grande, Mex. 
34 
7653 
San Bernardino.... 
69 
7663 
Cocomongo r’ch, Cal 
Mar. 19, 1854 
Lt. Whipple_ 
190 
8826 
Laramie peak_ 
TJ. Wa v ren 
Dr. Hayden_ 
8016 
Mexico_ 
John Could_ 
DENDROICA BLACKBURNIAE, Baird. 
Blackburnian Warbler. 
Motacllla blackburniae, Gmelin. Syst. Nat. I, 1788, 977. 
Sylvia blackburniae, Latham, Index Orn. II, 1790, 527.— Vieillot, Ois. Am. Sept. II, 1807, 36; pi. xcvi.— Wilson, 
Am. Orn. Ill, 1811, 67; pi. xxiii.— Nuttall, Man. I, 1832, 379 .—Add. Orn. Biog. II, 1834, 
208: V, 73, pi. 135, 399. 
Sylvicola blackburniae, Jardine, Ed. Wilson, 1832.— Rich. List, 1837.— Bon. List, 1838.— Ib. Conspectus, 1850, 
307.— Add. Syn. 1839, 57.— Ib. Birds Am. II, 1841, 48; pi. 87. 
Rhimanphus blackburniae, Cabanis, Mus. Hein. 1850, 19. 
Sylvia parus, Wilson, Am. Orn. V, 1812, 114 ; pi. xliv, f. 3 — Add. Orn. Biog. II, 1834, 205 ; pi. 134. 
Sylvicola parus. Add. Syn. 1839, 55.— Ib. Birds Amer. II, 1841, 40 ; pi. 83. 
Sylvia latei-alis, Steph. Shaw’s Zool. XII, 1817, 659. 
Blackburnian warbler, Pennant, Arctic Zool. II, 412.— Latham, Synopsis II, 461. 
Hemlock warbler, Authors. 
