262 Trans. Acad. Sci. of St. Louis. 
were taken between March 19th and April 12th. The nests are 
usually found in very tall trees in the Missouri bottom lands 
and less frequently in timbered places elsewhere in the county. 
The bulk of the returning migrants pass through during the 
latter part of October and early November. The wintering 
birds are to be found hunting in the prairie regions as well as in 
the timbered bottoms. 
This hawk is a great destroyer of vermin and instead of be- 
ing shot on sight by farmers and sportsmen should be protected 
and encouraged to remain. 
BUTEO BOREALIS KRIDERI Hoopes. Krider’s Hawk. 
Occasional visitant during migration. 
Krider’s Hawk has been observed a few times on the prairie 
regions south of the Country Club district near open timbered 
places. On October 15, 1916, one was studied at close range 
and identification was made certain. 
A specimen taken by Dankers was killed October 16, 1898. 
This light phase of the Red-tail is nowhere common but this 
vicinity is a favorable locality to look for it during migration 
and possibly in winter. More data relative to its local occur- 
rence is desired. 
BUTEO BOREALIS CALURUS Cassin. Western Red-tail. 
Rare winter visitant. 
A Western Red-tail was closely observed in the Brush Creek 
timber just inside the state line on November 5, 1916. Many 
Red-tails suspected of belonging to this dark race are seen 
every winter but only one specimen has been taken to prove its 
occurrence in the vicinity—November 7, 1913. 
BUTEO BOREALIS HARLANI (Audubon). Harlan’s Hawk. 
Casual visitant. 
A specimen of this southern hawk, taken on a farm about 
twelve miles from Kansas City, was mounted by Kreite, a local 
taxidermist, in 1916. The specimen was not personally examined 
but is vouched for by Mr. J. F. Frazier, whose identification 
cannot be questioned. 
BUTEO LINEATUS LINEATUS (Gmelin). Red-shouldered Hawk. 
Uncommon migrant and summer resident. 
Widmann says that as a summer resident in Missouri this 
