000 Wisconsin Academy of Sciences, Arts , and Letters. 
greenish or olive brown in color; minutely, but often thickly, 
speckled over the entire shell with brown of a reddish or darker 
shade. Several specimens taken in the Saskatchewan River 
region average 1.70x1.30. 
325. Turkey Vultuee. 
Cathartes arara (Linn.). 
Occasional individuals of this, bird were seen sailing about 
high in air, scanning the surrounding country. One specimen 
was seen which had been caught in a trap. No nests were found 
but, doubtless, a few pairs nest in this region as they were seen 
at different times throughout the spring and summer. 
331. Marsh Hawk. 
Circus hudsonius (Linn.). 
The Marsh Hawk is one of the most numerous of the hawks 
in this region. Its favorite haunts are in the neighborhood of 
swamps and sloughs and the marshy parts, of the prairie where 
there is a scattered growth of low bushes. About such places it 
may be seen for hours at a time, sailing back and forth near the 
ground in its search for small quadrupeds and other morsels of 
food. No nests of this bird were discovered. The picture of a 
wounded Marsh Hawk is shown in Plate XLL 
337a. KriderT Hawk. 
Buieo borealis hriderii ILoopes. 
Note. —Krider’s Hawk was usually observed in the vicinity 
of bodies of water. When seen on the prairie, it. was generally 
in the neighborhood of sloughs. 
For a nesting site, this Hawk selects one of the taller trees in 
a poplar bluff, or occasionally a tree standing almost alone on the 
prairie is chosen. In the case of a dozen or more nests observed, 
the site was close to a body of water. Several nests were built 
in small bluffs on the edge of sloughs. Two nests were placed 
near the top of tall trees growing only a few feet from the shore 
of Crooked Lake, and could be seen from the lake, at a distance 
of a mile or more. Another nest, was built in a poplar standing 
