88 
FALCO ULIGINOSUS. 
knees, long ; these and the feet, a fine yellow ; claw : s, 
black ; femorals, pale rusty, faintly barred with a darker 
tint. 
In the month of April I shot a female of this species, 
and the only one I have yet met with, in a swamp, seven 
or eight miles below Philadelphia. The eggs were, some 
of them, nearly as large as peas, from which circum- 
stance, I think it probable, they breed in such solitary 
parts even in this state. In colour, size, and markings, 
it differed very little from the male described above. 
The tail was scarcely quite so black, and the white bars 
not so pure ; it was also something larger. 
24. FALCO ULIGINOSUS, WILSON . — FALCO CYANEUS, LINNiEUS. 
MARSH HAWK. 
WILSON, PLATE LI. FIG. I. YOUNG FEMALE. 
A drawing of this hawk was transmitted to Mr 
Edwards, more than fifty years ago, by Mr William 
Bartram, and engraved in Plate 291 of Edwards' s 
Ornithology . At that time, and I believe till now, it 
has been considered as a species peculiar to this coun- 
try. 
I have examined various individuals of this hawk, 
both in summer and in the depth of winter, and find 
them to correspond so nearly with the ring-tail of 
Europe, that I have no doubt of their being the same 
species. 
This hawk is most numerous where there are exten- 
sive meadows and salt marshes, over which it sails very 
low, making frequent circuitous sweeps over the same 
ground, in search of a species of mouse, very abundant in 
such situations. It occasionally flaps the wings, but is 
most commonly seen sailing about within a few feet of 
the surface. They are usually known by the name of the 
mouse-hawk along the sea-coast of New Jersey, where 
