196 
U. S. P. R. R. EXP. AND SURVEYS—ZOOLOGY—-GENERAL REPORT. 
As stated under the head of E. traillii, E. minimus ditfers from it in its smaller size, and more 
ashy tinge on the sides of the head, the nape, and rump. The tail feathers are narrower, more 
rounded at the end, and less acuminate. The tarsi are one-tenth of an inch longer, though 
the bird is considerably smaller ; the claws also are larger. The second, third, and fourth 
quills are generally nearly equal, the latter always considerably exceeding the first, as does the 
fifth also ; in trailli the fifth is usually nearly the length of the first, or hut slightly different 
from it. 
One of the most appreciable differences between the two species lies in the two hands of the 
wing. These, with the other edgings of the wings in minimus, are dirty grayish white ; in 
traillii they are strongly tinged with grayish olive. Both have the outer primary edged with 
yellowish white, and the first tail feather with its outer web paler brownish than elsewhere, 
but not approaching to white. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Collected by— 
Length. 
Stretch 
of wings. 
Wing. 
2709 
Philadelphia . . ._„. 
S. F. Baird.... 
2450 
Carlisle, Pa_-_ 
Sept. 10 1845 
_do_ 
5. 33 
8 25 
2.50 
2274 
s 
_do_...... 
May 17, 1845 
5.33 
8.25 
2.58 
2132 
April 23, 1845 
_do.._..... 
5.50 
8. 25 
2.58 
3371 
3 
May 3, 1847 
5. 50 
8.50 
2.75 
1415 
3 
May 1, 1844 
.do. 
5. 58 
8. 58 
2. 66 
726 
Sept, 16, 1842 
_do_....... 
5.25 
8. 00 
1486 
3 
May 8, 1844 
5.41 
3. 50 
3. 66 
2563 
Q 
__..do___ 
May 5, 1846 
_do....._ 
5.41 
8.00 
2.50 
2254 
Q 
__do_ 
May 12, 1845 
5. 58 
7.83 
2.41 
2348 
May 26, 1845 
5. 16 
7.41 
2. 33 
2163 
April 29, 1845 
_ _do__ 
5. 50 
8. 25 
2. 58 
2133 
April 23, 1845 
......do_ 
5 50 
8.41 
2.50 
2624 
May 11, 1846 
5.33 
8. 25 
2.58 
2650 
May 12, 1846 
5. 33 
8. 16 
2.50 
2649 
5. 50 
8. 00 
2. 50 
1672 
Aug. 12, 1844 
5.41 
8. 00 
2.41 
7415 
Cleveland, Ohio_ 
Chicago, Ill__ 
May 2, 1855 
Racine, Wis_ 
7415 
Cleveland, Ohio_ 
5270 
3 
Aug. 4, 1856 
Dr. Hayden.. 
5. 00 
7.75 
2.50 
4700 
3 
May 15, 1856 
5. 50 
8. 25 
2.75 
4699 
o 
......do_ 
_do_... 
5. 25 
7. 62 
2. 75 
4701 
A 
_do_ 
_do_ 
_do____ 
_do_ 
5. 25 
8. 50 
2.75 
4702 
3 
Vermilion. ....._ 
May 6, 1856 
_do_ 
_do__ 
5. 37 
8. 00 
2. 62 
4698 
9 
Nebraska._...... 
May 11, 1856 
4.87 
7.50 
2. 75 
