Nests are placed from 15 to 30 feet high, averaging 25 feet in elm, oak, and other trees.
Red-tailed Hawk: Buteo jamaicensis borealis (Gmelin).—This is a common resident east of the 100th meridian; to the west numbers are reduced, although the species is by no means unusual in western Kansas. Red-tails probably always were uncommon in western Kansas; Wolfe (1961) reports that they were "very rare as a nesting species" in Decatur County shortly after the turn of the 20th Century. Breeding schedule.—Thirty-six records of breeding span the period February 21 to April 10 ([Fig. 3]); the modal date of egg-laying is March 5.
Number of eggs.—Clutch-size is 3 eggs (2.6, 2-3; 20).
Nests are placed about 40 feet high, ranging from 15 to 70 feet in cottonwood, honey locust, osage orange, sycamore, and walnut.
Red-shouldered Hawk: Buteo lineatus lineatus (Gmelin).—This is an uncommon summer resident in eastern Kansas, in riparian and bottomland timber. Nesting records are available from Leavenworth, Woodson, and Linn counties, and red-shoulders probably also nest in Doniphan County (Linsdale, 1928).
Breeding season.—Eggs are laid in March and April.
Number of eggs.—Clutch-size is about 3 eggs (Davie, 1898).
Nests are placed up to 70 feet high in elms and other streamside trees.
Table 11.—Occurrence in Time of the Summer Resident Vulture and Hawks in Kansas
| Species | Arrival | Departure | ||
| Range | Median | Range | Median | |
| Turkey Vulture | Mar. 7-Mar. 30 | Mar. 15 | Sept. 24-Oct. 28 | Oct. 5 |
| Red-shouldered Hawk | Feb. 10-Mar. 14 | Feb. 26 | Oct.-Dec. | ........ |
| Broad-winged Hawk | Apr. 4-Apr. 21 | Apr. 12 | Sept. 1-Oct. 20 | ........ |
| Swainson Hawk | Mar. 24-Apr. 28 | Apr. 12 | Oct. 5-Nov. 2 | Oct. 11 |