Nests are placed near or on the ground, usually at the base of small shrubs or clumps of grass. =Yellowthroat=: _Geothlypis trichas_ (Linnaeus).--This summer resident in and near marshes is common in the east and is local and somewhat less common in the west. _G. t. brachydactylus_ (Swainson) breeds east of stations in Clay, Greenwood, and Montgomery counties, _G. t. occidentalis_ Brewster breeds west of stations in Decatur, Stafford, and Pratt counties, and the intervening area is occupied by warblers of intermediate morphologic characters. Temporal occurrence is indicated in Table 17. _Breeding schedule._--Nine records of breeding span the period May 11 to June 10; the modal date of egg-laying is June 1. The season is probably more extended in time than is indicated by the available records. _Number of eggs._--Clutch-size is 5 eggs (4.8, 4-5; 6). Nests are placed in cattails and sedges one to two and one-half feet high. =Yellow-breasted Chat=: _Icteria virens_ (Linnaeus).--This summer resident is common in willow thickets and rank second-growth. _I. v. virens_ (Linnaeus) breeds in eastern Kansas, from Nemaha County south, _I. v. auricollis_ (Deppe) breeds in western Kansas, from Norton County south, and the intervening sector is occupied by chats of intermediate morphologic character. Temporal occurrence is indicated in Table 17. _Breeding schedule._--Twenty-six records of breeding span the period May 11 to July 20 (Fig. 8); the modal date for completion of clutches is June 5. Forty-two per cent of all eggs are laid in the period June 1 to 10. _Number of eggs._--Clutch-size is 4 eggs (3.9, 3-5; 21). Clutches in May are larger than those in June and July. Nests are placed in forks and crotches about three feet high in dogwood, willow, rose, coralberry, cottonwood, and thistles. =Hooded Warbler=: _Wilsonia citrina_ (Boddaert).--This warbler is a rare summer resident in eastern Kansas, in wet, open woodland. Specimens (a total of four) taken in the breeding season are from Leavenworth and Shawnee counties, and the one nesting record is from Anderson County. _Breeding schedule._--Eggs are laid at least in May. _Number of eggs._--Clutch-size is about 4 eggs. Nests are low (some as high as six feet) in woody vegetation. =American Redstart=: _Setophaga ruticilla ruticilla_ (Linnaeus).--This summer resident occurs locally in woodlands east from stations in Cloud and Sumner Counties. Temporal occurrence is indicated in Table 17. _Breeding schedule._--Eggs are laid in May and June. _Number of eggs._--Clutch-size is about 4 eggs (Davie, 1898), but there are two records of 5 in Kansas. Nests are placed six to 30 feet high, but usually about 12 feet, in forks or saddled on a branch, in deciduous trees. [Illustration: FIG. 8.--Histograms representing breeding schedules of wood warblers, the House Sparrow, icterids, and cardinal grosbeaks in Kansas. See legend to Figure 1 for explanation of histograms.]