115 
In the spring of 1884 it was reported from various parts of Iowa, 
about the middle of March; from Lanesboro, Minn., March 2 (two 
being seen during a furious storm, and it was repeatedly seen the next 
week). April 3 it appeared at Two Rivers, Manitoba (latitude 49° 28’) ; 
and. April 12 it reached Oak Point, Manitoba. 
In the spring of 1885 the Red-tailed Hawk was seen at Laporte City, 
Iowa, March 3, and at Lake City, Minn., March 26. Various irregular 
notes were given from intervening places. 
In the fall of 1885 the first returning migrants reached Bonham, 
Tex., November 10, and were common there November 19. 
337a. Buteo borealis kriderii Hoopes. [436a.] Krider's Hawk. 
An inhabitant of the Great Plains, the eastern limit of its range cover- 
ing the western part of the Mississippi Valley from Minnesota to Texas. 
Has been taken in Minnesota, Wisconsin, Iowa, northeastern Illinois, 
Kansas, and Texas. Roberts and Benner took a young Krider’s Hawk 
from the nest in western Minnesota in June, 1879, and Mr. Ridgway 
tells me he has examined two females shot from the nest in Minnesota. 
337b. Buteo borealis calurus (Cass.). [436).] Western Red-tail. 
The Western Red-tail reaches the western border of the Mississippi 
Valley district. Colonel Goss records it as not uncommon in Kansas in 
winter. It has been taken also in Illinois, near Chicago (Nelson). The 
only observer who has had the good fortune to secure it is Mr. Lloyd, 
who finds it an abundant resident in Concho county, Tex., where it 
breeds from April 22 to May 22. 
338. Buteo harlani(Aud.). [438.] Harlan’s Hawk. 
Harlan’s Hawk is an inhabitant of the Gulf States and the lower 
Mississippi Valley, and has been found as far north as Kansas, Illinois, 
and Iowa. It was reported by one of the observers in former years 
from Liter, Ill., and has also been found at Warsaw, IIl., and at Gaines. 
ville, Tex. Nothing is known of its movements and breeding habits. 
The species was described by Audubon from a specimen killed in 
Louisiana. 
339. Buteo lineatus (Gmel.). [439.] Red-shouldered Hawk. 
The movements of this species are similar to those of the Red-tailed 
Hawk, with which it is often found during migration, but it does not 
go so far north, seldom passing beyond our northern boundary. In 
eastern Kansas it is a common resident (Goss). Both it and the 
Red-tail intended to spend the winter of 1883-84, as usual, in the 
vicinity of Saint Louis, but the severe cold of the first week in J. anuary 
proved too much for them, and they migrated, to return with the first 
warm wave the last of the month. It was reported as wintering at 
Chicago, and as a rare winter resident in southern Missouri. It mi- 
grated at the same time as the Red-tail, and at Elk River, Minn., where 
the latter was not seen, it arrived March 24, 
