260 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—GENERAL REPORT. 
Comparative measurements of species. 
Catal. 
No. 
Species. 
Locality. 
Sex and 
age. 
Length. 
Stretch 
of wings. 
Wing. 
Tail. 
Tarsus. 
Middle 
toe. 
Its claw 
alone. 
Bill 
above. 
Along 
gape. 
Specimen 
measured. 
1433 
Seiurus aurocapillus. 
, 0 
5.10 
2 74 
2.22 
0 91 
0 68 
0.16 
0.48 
0.58 
Drv. 
V 
5.75 
9.16 
2 75 
6995 
fi 00 
3 06 
2 44 
0 86 
0 71 
0 16 
0.44 
0.54 
1502 
Seiurus noveboracensis... 
Carlisle, Pa.... 
<? 
5.40 
2.96 
2.36 
0.82 
0.72 
0.19 
0.46 
0.66 
Dry. 
...do.. 
.do. 
6.16 
9.75 
3.08 
Fresh ... 
10169 
6.14 
3.10 
2 48 
0 82 
0.66 
0.18 
0.50 
0.64 
964 
Seiurus ludovicianus. 
5.3b 
3.30 
2.38 
0.90 
0.72 
0.16 
0.57 
0.70 
Dry. 
. ..do.. 
.do . 
6.33 
10.75 
3.25 
Fresh ... 
9108 
«? 
5.40 
3.26 
2 40 
0.90 
0.74 
0.16 
0.56 
0.72 
Dry. 
SEIURUS AUROCAPILLUS, Swain son. 
Oven bird ; Golden-crowned Thrush. 
Motacilla aurocapilla, Linnaeus, Syst. Nat. I, 1766, 334.— Gmelin, I, 1788, 982. 
Turdus aurocapillus, Latham, Ind. Orn. 1,1790, 328.— Wilson, Am. Orn. II, 1810, 88 ; pi. xiv, f. 2.— Licht. Verzeich. 
1823, No. 424.— Aud. Orn. Biog. II, 1834, 253 : V, 1839, 447 ; pi. cxliii. 
Sylvia aurocapillus, Bonap. Obs. Wi]s. J. A. N. S. IY, 1826, 35. 
Seiurus aurocapillus, Swainson, Zool. Jour. Ill, 1827, 171.— Ib. F. Bor. Am. II, 1831, 247.— Bon. List, 1838.— 
Ib . Conspectus, 1850, 306.— Aud. Syn. 1839, 93. —Ib. Birds Amer. 
Turdus ( Seiurus ) aurocapillus, Nuttall, Man. I, 1832, 355. 
Accentor aurocapillus, Rich. List, 1837. 
Enicocichla aurocapilla, Gray, List Genera, 1840. 
Henicocichla aurocapilla, Cabanis, Mus. Hein. 1851, 15. 
Turdus coronatus, Vieillot, Ois. Am. Sept. II, 1807, 8 ; pi. lxiv. 
Sp. Ch. —Above uniform olive green, with a tinge of yellow. Crown with two narrow streaks of black from the bill, enclosing 
a median and much broader one of brownish orange. Beneath white; the breast, sides of the body, and a maxillary line 
streaked with black. The female and young of the year are not appreciably different. Length, 6.00 ; wing, 3.00 ; tail,2.40. 
Hah .—Eastern North America to the Missouri. 
The sides of the head are olivaceous, paler than the hack, with a superciliary hand of the same 
color outside the black. The loral space and a ring round the eye are whitish, the latter with 
a little yellow. The feet and maxilla are yellow; the mandible brownish. The brownish orange 
of the crown is usually obscured by olivaceous tips to the feathers, sometimes to such an extent 
as to hide it almost entirely from view, (4719.) 
A specimen of this species (8387) from Independance is larger with longer wings than any 
others in the collection. 
