THE BIRD BOOK 
341. Sennett’s White-tailed Hawk. 
Sennett’s White-tailed Hawk 
Range. — Central and western North America, 
from the Mississippi Valley and Hudson Bay, 
to the Pacific coast, breeding throughout its 
range. 
In the greater part of its range, this is 
the most abundant of the Hawk family. 
Its plumage is extremely variable, showing all the intergradations from a uni- 
form sooty blackish to the typical adult plumage of a grayish above, and a 
white below, with a large breast patch of rich chestnut. Their nesting habits 
are as variable as their plumage. In some localities, they nest exclusively in 
trees, in others indifferently upon the ground or rocky ledges. The nest is the 
usual Hawk structure of sticks; the eggs are white, variously splashed and 
Buteo albicaudatus sennetti. 
Range. — Mexican border of the United States 
and southward. 
A large, handsome Hawk which may be iden- 
tified by its dark upper parts and white under- 
parts and tail, the flanks and tail being lightly 
barred with grayish; the shoulders are chest- 
nut. It is especially abundant in the southern 
parts of Texas, where it builds its nests of 
sticks and weeds, lined with grasses, leaves 
and moss. They nest in March and April, lay- 
ing two, or rarely three, eggs which are a dull 
white, and generally immaculate, but occasion- 
ally faintly or sparingly spotted with brown. 
Size of eggs 2.25 x 1.80. 
342. Swainson’s Hawk. Buteo swainsoni. 
White 
spotted with reddish brown and umber. Size 
2.20 x 1.70. Data.— Stark Co., N. D„ May 21, 
1897. Nest of sticks, lined with weeds in an 
ash tree. Collector, Roy Dodd. 
Swainson’s Hawk 
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