tish
Provinces southward.

A medium sized species, about 16 inches in length, and with a short tail
and broad rounded wings; adults have the underparts handsomely barred
with brown. Their nests are usually built in large trees, but generally
placed against the trunk in the crotch of some of the lower branches. It
is made of sticks and almost invariably lined with bark. The two to four
eggs are of a grayish white color, marked with chestnut, brown and stone
gray; size 1.90 x 1.55. Data.--Worcester, Mass., May 16, 1895. Nest
about 20 feet up in a large chestnut tree. The birds continually circled
overhead, their weird cries sounding like the creaking of branches.
Collector, A. J. White.

344. SHORT-TAILED HAWK. _Buteo brachyurus._

Range.--A tropical species, which occurs north to the Mexican border and
regularly to southern Florida, where it breeds in the large cypress
swamps. Its eggs are pale greenish white, sparingly spotted with brown,
chiefly at the large end. Size 2.15 x 1.60.

345. MEXICAN BLACK HAWK. _Urubitinga anthracina._

Range.--Mexican border of the United States and southward.

A coal black species about 22 inches in length, distinguished by the
white tip, and broad white band across the tail about midway. This is
one of the least abundant of the Mexican species that cross the border.
They are shy birds and build their nests in the tallest trees in remote
woods. Their two or three eggs are grayish white, faintly spotted with
pale brown; size 2.25 x 1.80. Data.--Los Angeles County, Cal., April 6,
1889. Nest of sticks, lined with bark and leaves; 45 feet up in a
sycamore tree. Collector, R. B. Chapman.

[Illustration 215: Grayish white.]
[Illustration: American Rough-legged Hawk.]
[Illustration: Grayish white.]
[Illustration: right hand margin.]

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346. MEXICAN GOSHAWK. _Asturina plagiata._

Range.--Mexico, north to the border of the United States.

A beautiful, medium sized Hawk (17 inches long), slaty gray above, white
below, numerously barred with grayish; tail black, crossed by several
white bars. These are graceful and active birds, feeding largely upon
small rodents, and occasionally small birds. They nest in the top of
tall trees, laying two or three greenish white, unmarked eggs; size 1.95
x 1.60. Data.--Santa Cruz River, Arizona, June 3, 1902. Nest in the fork
of a mesquite tree about forty feet from the ground; made of large
sticks, lined with smaller ones and leaves. Thr