. Handbook of birds of eastern North America, with keys to the species and descriptions of their plumages, nests, and eggs .. . hases of coloration there is everydegree of intergradation, but in any plumage this Hawk may be distinguishedfrom our other species by having only three outer primaries notched. In thisrespect it agrees with B. latissimus., from which, however, it differs decidedlyboth in size and color. ^az/^e.—Western North America, eastward to the Mississippi; breedsfrom Texas to the arctic regions, and occasionally strays eastward to the At-lantic States. Mst., in trees, thirty to
. Handbook of birds of eastern North America, with keys to the species and descriptions of their plumages, nests, and eggs .. . hases of coloration there is everydegree of intergradation, but in any plumage this Hawk may be distinguishedfrom our other species by having only three outer primaries notched. In thisrespect it agrees with B. latissimus., from which, however, it differs decidedlyboth in size and color. ^az/^e.—Western North America, eastward to the Mississippi; breedsfrom Texas to the arctic regions, and occasionally strays eastward to the At-lantic States. Mst., in trees, thirty to eighty feet from the ground. Eggs., two to three,varying from dull bluish white to creamy white, sometimes unmarked, butgenerally more or less spotted or blotched with shades of cinnamon-brown,2-30 X 1-72. Swainsons Hawk is of rare occurrence east of the Mississippi. writes: By preference it frequents the timber in the vicinityof streams, though often it is found far out on the prairie, where itsonly perch is the earth mound of some mammal, or some otherslightly elevated knolL 204 FALCONS, HAWKS, EAGLES, Fig. 70.—Three-notched primaries of Broad-wingedHawk. (Reduced.) 343. Buteo latissimus (Wlls.). Broad-winged Hawk. Ad.—Upper parts dark gruyisJi brown or fuscous, more or leas margined with, butfyand rufous; three outer primaries notched and without ochraceous-butf markings; tail fus-cous, with two barsand the tip grayishwhite ; under partsheavily barred withbrownish ochraceous-buft. Im. — Upperparts like the pre-ceding ; tail grayish brown, with three to five indistinct black bars and a narrow whitish tip; under parts white or butfy white, streaked and spotted with fuscous. 6 L., 15-89 ; W., 10-68; T., 6*75 : B. from N., -70. 9 L., 16-76 ; W., 11-41; T., —Compared with the other members of this genus, the three notched primaries and small size are the principal characters of this Hawk. Range.—Breeds throughout eastern North America, f
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