Nests are placed on the ground or in low vegetation, with cover of grasses or forbs.
Henslow Sparrow: Passerherbulus henslowii henslowii (Audubon).—This is an uncommon and local summer resident in eastern Kansas, in grassland. Breeding records are from Cloud, Shawnee, Douglas, Morris, and Anderson counties. Temporal occurrence is indicated in [Table 20].
Breeding schedule.—Eggs are laid in May and June.
Number of eggs.—Clutch-size is about 5 eggs.
Nests are placed on the ground, usually in bluestem pasture, but in any case grasses.
Lark Sparrow: Chondestes grammacus (Say).—This is a common summer resident in grassland edge habitats. C. g. grammacus (Say) breeds east of the Flint Hills, east of stations in Pottawatomie, Anderson, and Montgomery counties, and C. g. strigatus Swainson breeds west of stations in Clay, Dickinson, Harvey, and Sedgwick counties; specimens from the intervening area are of intermediate subspecific character. Temporal occurrence is indicated in [Table 20].
Breeding schedule.—Thirty-nine records of breeding span the period May 1 to July 20 ([Fig. 9]); the modal date for egg-laying is probably May 25, but the sample may not be reliable in this respect.
Number of eggs.—Clutch-size is 4 eggs (4.1, 3-5; 28).
Nests are usually placed on the ground, in cover of pasture grasses, clover, thistle, milo maize, and soybean; there is one record of a nest one and one-half feet high in a small pine.
Cassin Sparrow: Aimophila cassinii (Woodhouse).—This is a common summer resident in open scrub and grassland edge, to the south and west of Wallace and Comanche counties. Specimens taken in the breeding season and actual nesting records are from Wallace, Hamilton, Kearny, Finney, Morton, and Comanche counties; the A. O. U. Check-list (1957) cites Hays, Ellis County, as a breeding locality, but it is doubtful that the species now occurs there. Breeding schedule.—Eggs are laid in May and June.