Breeding schedule.—Eggs are laid in the period May 1 to August 10.
Number of eggs.—Clutch-size is about 4 eggs.
Nests are placed at medium elevations in riparian trees, in Kansas chiefly cottonwood, or in beds of emergent marsh vegetation.
Yellow-crowned Night Heron: Nyctanassa violacea violacea (Linnaeus).—This is a local summer resident in riparian habitats, chiefly in southeastern Kansas. Specimens taken in the breeding season and records of nesting come from Meade, Stafford, Doniphan, Douglas, Greenwood, Woodson, Labette, and Cherokee counties. Characteristics of occurrence in time in Kansas are shown in [Table 10]. Breeding schedule.—Eggs are laid in May and June.
Number of eggs.—Clutch-size is about 4 eggs.
Nests are placed in riparian trees.
Least Bittern: Ixobrychus exilis exilis (Gmelin).—This is a local summer resident in marshland. Characteristics of its occurrence in time are indicated in [Table 10].
Breeding schedule.—Eleven records of breeding span the period May 21 to July 20; the modal date of egg-laying seems to be in the first week of June.
Number of eggs.—Clutch-size is about 4 eggs.
Nests are placed in dense emergent vegetation a few inches to a foot above the surface of the water.