263 
men. I frequently saw small Falcons, which I took to he Pigeon Hawks, hut at such 
distances and under such circumstances that I did not succeed in procuring them. 
No. j Sex. 
Locality. 
Date. 
Collector. 
Wing. 
Tail. 
Bill. 
Tarsus. 
437 ? jun. 
Walker’s Basin, Cal. 
Aug. 28 
H. W. Henshaw... 
8. 30 
5. 75 
0. 53 
1. 48 
129. Falco sparverius, Linn.—Sparrow Hawk. 
In California, as throughout the West generally, the Sparrow Hawk is very numerous. 
The dry hills along the coast near Santa Barbara were resorted to by great numbers 
of these birds in July, and in following the line of the telegraph one of them was to 
be seen perched on one of the poles at intervals of every few yards. 
No. 
Sex. 
Locality. 
# 
Date. 
Collector. 
368 
9 
Tejon Mountains, Cal. 
Aug. 7 
H. W. Henshaw. 
130. Pandion halicetus, (Linn.), var . caroUnensis, Gmel.—Fish Hawk. 
Present throughout California, both in the interior whore the streams are stocked 
with fish, and on the coast, but more particularly the latter. 
131. Circus cyaneus, (Linn.), var. Tmdsonius, Linn.—Marsh Hawk. 
The open country everywhere is visited by this Hawk, which is very numerous in 
California. Resident in the southern part. 
No. 
Sex. 
Locality. 
Date. 
Collector. 
596 
597 
673 
cf ad. 
9 
Walker's Basin, Cal...... 
Oct, 23 
H. W. Henshaw. 
_do ..... 
Oct. 23 
Do. 
cf ad. 
do .. 
Nov. 9 
Do. 
132. Xisus fu8cu8, Gmel.—Sharp-shinned Hawk. 
A common resident throughout Southern California. This little Hawk is of a bold, 
dashing disposition, preying indiscriminately upon all the smaller kinds of birds as well 
as upon small mammals. In procuring these, it beats through the mazes of the woods, 
following the edges of the thickets, and passing through the leafy openings, and secures 
its victim, either by surprising and dropping suddenly down upon it, or else, having 
started it out, pursues it in open chase and clutches it while at full speed. 
133. Nisus cooperi , (Bon.).—Cooper’s Hawk. 
The Cooper’s Hawk seems to be about as numerous in Southern California as its 
smaller relative. In summer it is not often seen in the lower districts, but will then 
be found to have retired to the mountains, where it nests, choosing some lofty ifine as 
the site of its domicile. In the fall, there appears to be a very decided migration 
from the north, and then the low country generally is occupied by this species, which 
winters in the southern half of the State. 
No. 
Sex. 
Locality. 
Date. 
Collector. 
383 
468 
640 
9 jun. 
cf jun. 
Aug. 17 
Sept. 12 
Nov. 5 
H. W. Henshaw. 
Do. 
Wnllror’s Ttasdn C!n,l ___........................... 
Do. 
O J 1111 * 
134. Buteo sivainsoni, Bon.—Swainson’s Hawk. 
This Hawk appears to be pretty well distributed over the southern part of California, 
and is, in certain localities, very common. This was the case in the San Fernando 
Valley in July. Camping here one evening, our attention was directed to the great 
number of Gophers (Spermophile hawesii), which in large colonies inhabited some barren 
hills near the station. Toward dusk the place was visited by at least a dozen of these 
birds, which took up their positions on the little hillocks thrown up by the animals in 
front of their burrows, and awaited with patience the moment when a favorable op- 
