222 
U. S. P. R K. EXP. AND SURVEYS — ZOOLOGY GENERAL REPORT. 
SI ALIA SIALIS, B a i r d . 
Blue Bird ; Red-breasted Blue Bird. 
quills 
wing, 
Hal 
Motacilla Halts, Linnaeus, Syst. Nat. ed. X, I, 1758, 187.— Gmelin, Syst. Nat. I, 1788, 989. 
Sylvia sialis, Latham, Index Orn. II, 1790, 522.— Vieillot, Ois. Am. Sept. II, 1807, 40 ; pi. ci, cii, ciii, (c? Q O.)— 
Wilson, Am. Orn. I, 1S08, 56 ; pi. iii.— Doughty, Cab. N. H. I, 1830,135; pi. 
xii.— Audubon, Orn. Biog. II, 1834, 84 : V, 1839, 452 ; pi. 113. 
Saxicola sialis, Bonap. Sj'nopsis, 1828. 
Ampdis sialis, Nuttall, Man. I, 1832, 444. 
Rubecula Caroline nsis caerulca, Brisson, Orn. Ill, 17G0, 423. (Speaks of blue spots on throat.)— Buffon, Ois. VI, 
107 ; pi. enl. 396, f. 1, 2. 
Siulia wilsonii, Swainson, Zool. Jour. Ill, 1827, 173. — Bonaparte, List, 1838. — Audubon, Synopsis, 1839, 84. — Ib. 
Birds Amer. II, 1841, 171 ; pi. 134. 
Erythraca {Sialia) wilsonii, Sw. & Rich. F. Bor. Am. II, 1831, 210. 
Ch. — Entire upper parts, including wings and tail, continuous and uniform azure blue ; the cheeks of a duller tint of the 
Beneath reddish brown ; the abdomen, anal region, and under tail coverts white. Bill and feet black. Shafts of the 
and tail feathers black. Female with the blue lighter, and tinged with brown on the head and back. Length, 6.75 ; 
4.00 ; tail, 2.90. 
.— Eastern North America to a little west of Missouri river Fort Laramie. 
The female is quite similar to the male, only duller above ; the blue tinged with brown, 
although the wings, tail, and rump are generally light blue. The young male of the year has 
the head and interscapular region, with the lesser coverts dull brown, streaked (except the 
head) with white. The throat and fore breast are reddish brown, the feathers streaked with 
white ; the remaining colors are much as in the adult male, except that the tertials are edged 
with brown. 
There is much difference in the size and shape of the bill in specimens from the same locality. 
List of specimens. 
Catal. Sex and 
No. 
4658 
S884 
8880 
8882 
7615 
3 O 
3 
3 
3 
Q 
3 
Q 
Carlisle, Pa. 
do 
Rockport, Ohio. 
.do. 
Eutaw, Ala 
Prairie Mer Rouge, La..., 
Nassau county, Fla 
Racine, Wis 
Ft. Leavenworth....: ... 
Independence, Mo , 
East of Fort Riley, K. T. 
Fort Riley, K. T , 
Bald island, Neb , 
Fort Lookout, Neb 
Near mouth of Powder riv 
Nebraska Territory 
White river, Neb 
5 miles above mo. of Platte 
On Loup Fork, Platte 
Near Loup Fork, Platte . . . 
Texas 
Sept. 21,1842 
Mar. 9, 1844 
Mar. 25, 1844 
Mar. 11,1844 
Mar. 7,1844 
Ap il 19,1851 
April 1,1851 
Jan. —,1853 
Jan. 20,1855 
Jan. 22,1657 
June 17,1856 
April 24,1856 
May 31,1856 
May 16,1856 
May 11,1855 
Whence obtain 
Dr. Kirtland . 
.las. Fairie 
G. Wurdemann.... 
R. Keniiicott 
Lt. Couch 
W. M. Magraw 
Lt. F. T. Bryan 
Dr. W.A.Hammond 
Lt. Warren 
.do., 
Col. Vaughan. 
Lt. Warren... 
Dr. Cooper .. 
W. S. Wood. 
6.37 
7.50 
12.16 
12. 
12.50 
12.50 
11.50 
11.87 
