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.