196 
U. S. P. K. R. EXP. AND SURVEYS ZOOLOGY— GENERAL REPORT. 
As stated under the head of E. traillii, E. minimus differs froin 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 but slightly different 
from it. 
One of the most appreciable differences between the two species lies in the two bands 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 
Carlisle, Pa 
2450 
Sept. 10, 1845 
May 17, 1845 
April 23, 1845 
May 3, 1847 
May 1, 1844 
Sept, 16, 1842 
May 8, 1844 
May 5, 1846 
May 12, 1845 
May 26, 1845 
April 29, 1845 
April 23, 1845 
May 11, 1846 
May 12, 1846 
do 
do 
5. 33 
8 25 
2. 50 
2274 
8 
do 
5.33 
8. 25 
2.58 
2132 
5.50 
2. 58 
3371 
8 
do 
5. 50 
8.50 
2.75 
1415 
8 
do 
do 
5.58 
8. 58 
2.66 
726 
do 
5. 25 
8. 00 
1486 
8 
do 
5.41 
3. 50 
3. 66 
2563 
Q 
do 
do 
5.41 
8.00 
2.50 
2254 
Q 
do 
do 
5. 58 
7.83 
2.41 
2348 
do 
5.16 
7.41 
2. 33 
2163 
do 
5.50 
8.25 
2. 58 
2133 
do 
5 50 
8.41 
2. 50 
2624 
do 
5. 33 
8. 25 
2.58 
do 
5. 33 
8. 16 
2.50 
2649 
5. 50 
8. 00 
2. 50 
1672 
Aug. 12, 1844 
5.41 
8.00 
2.41 
7415 
Chicago, 111 
May 2, 1855 
Northwestern Univ. 
7415 
Cleveland, Ohio 
5270 
8 
Near Powder river 
Aug. 4, 1856 
May 15, 1856 
do 
Dr. Hay den 
5. 00 
7. 75 
2.50 
4700 
8 
do 
5.50 
8.25 
2.75 
4699 
Q 
......do 
do 
do 
5. 25 
7.62 
2. 75 
4701 
8 
do 
5. 25 
8.50 
2. 75 
4702 
8 
Vermilion. 
May 6, 1856 
May 11, 1856 
do 
do 
5.37 
8. 00 
2. 62 
4698 
Q 
Nebraska 
4.87 
7.50 
2.75 
