222 U. S. P. R R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
SIALIA SIALIS, Baird. 
Blie Bird; Red-breasted Blue Bird. 
Motacilla sialis, Linnaeus, Syst. Nat. ed. X, I, 1758, 187—Gme.in, Syst. Nat. I, 1788, 989. 
Sylvia sialis, Laruam, Index Orn, II, 1790, 522.—Vieitio7, Ois. Am. Sept. II, 1807, 40; pl. ci, cii, ceili, (¢ QO.)— 
Wirson, Am. Orn. J, 1808, 56; pl. iii—Doucury, Cab. N. H. I, 1830, 135; pl. 
xiii—Avupvuson, Orn. Biog. II, 1834, 84: V, 1839, 452; pl. 113. 
Savicola sialis, Bonar. Synopsis, 1828. 
Ampelis sialis, Nurtatt, Man. I, 1832, 444. 
Rubecula carolinensis caerulea, Brisson, Orn. III, 1760, 423. (Speaks of blue spots on throat.)—Burron, Ois. VI, 
107; pl. enl. 396, f. 1, 2. 
Sualia wilsonti, Swainson, Zool. Jour. II, 1827, 173.—Bonaranre, List, 1838.—Avupuson, Synopsis, 1839, 84.—Is. 
Birds Amer. II, 1841, 171; pl. 134. 
Erythraca (Sialia) wilsonii, Sw. & Ricu. F. Bor. Am. II, 1831, 210. 
Sp. Cu.-—Entire upper parts, including wings and tail, continuous and uniform azure blue ; the cheeks of a duller tint of the 
same. Beneath reddish brown ; the abdomen, anal region, and tinder tail coverts white. Bill and feet black. Shafts of the 
quills and tail feathers black. Female with the blue lighter, and tinged with brown on the head and back. Length, 6.75 ; 
wing, 4.00; tail, 2.90. 
Hab.—Fastern 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 Locality. When col- | Whence obtained. | Orig’! Collected by— Length.| Extent.| Wing. Remarks, 
No. age. lected. No. 
Sept. 21,1842] S. F. Baird .....00-/.eeeee 
Mar. 9,1844 
.| Mar, 25, 1844 |. 
-| Mar, 11,1844 
Mar. 7,1844 
Ap ‘il 19,1851 
«| April) 1,1851 
«| Eutaw, Ala..ssecseeeeeees Jan. —, 1853 
Prairie Mer Rouge, La..es|eceeeee.seeers SUS MICALILE = wtolare iersiai|lcinie’ws\s||(ss/mcieioia(sla(sisicfesiase stele 
Nassau County, Fla.eeeees|eseeeece eves G. Wurdemann....)...... Marte ralslavalateieittestelalerele 
«| Racine, Wis....+-++ ee eeesl sees ceerecees R. Kennicott. | 
Ft. Leavenworth. .... «s+. Jan. 20,1855) Lt. Couch.......0.- Snail viajaisleleiaineve sinieinle 
Independence, MO..+...+. Jan. 22,1857| W. M. Magraw..... | 98 | Dr. Cooper ........ 
East of Fort Riley, K. T..| June 17,1856 eLt. F. T. Bryan..... 22 | W.S. Wood 
6560 |eceeeeee Fort Riley, K. T cseececeas|eceeceeeneeres Dr.W.A.Hammond | 
4723 ref Bald island, Neh.....sse0+ April 24,1856 | Lt. Warren 
5288 | | Fort Lookout, Neb....... May 31,1856] . ...d0...... 
5290| noon Ui@panaEne pes n000 onoellao96 ga00eqoD06|fac0000 Goooon 
5QB9 | ccccces Near mouth of Powder riv.| Aug. 1,1856 | .....dO ..ssseeeeee 
4722 | @ | Nebraska Territory.......|May 16,1856 ]|...... dOsceseeeeees 
4658 3 White river, Neb.......+.| May 11,1855 | Col. Vaughan...... 
$884 fof 5 milesabove mo. of Platte.|...- + weer sees Lt. Warren... see. 
8880 fot On Loup Fork, Platte..... SW 1851855) |eieiecOle 
8882 rot Near Loup Fork, Platte...| July 3,1855 ......d0 ... 
79 GY ogee coos TEXAS cciciclene elec caiesieieieleia'ti|eislececeisleis.= eisin\= Capt. Rope sccvecs:|eccces we 
