Shoveler: Anas clypeata Linnaeus.—This is an irregular and local summer resident, around marshes. Most individuals seen in the State are passage migrants. Breeding records are from Barton and Finney counties.
Breeding schedule.—Seasonal limits are unknown for the Shoveler in Kansas.
Number of eggs.—Clutch-size is about 8 eggs (Davie, 1898).
Nests are placed on the ground surface in cover of marsh vegetation.
Wood Duck: Aix sponsa (Linnaeus).—This is an uncommon summer resident around wooded streams and ponds in eastern Kansas. Nesting records and specimens taken in the breeding season come from east of stations in Pottawatomie, Coffey, and Woodson counties. Most nesting records at present come from the Marais des Cygnes Wildlife Refuge, Linn County. The species is present in the State from March 5 to December 8.
Breeding schedule.—Eleven records of breeding span the period March 21 to May 10; the peak of egg-laying is probably in mid-April. The present data are inadequate for showing the full span of the breeding season.
Number of eggs.—Clutch-size is around 15 eggs, varying from 10 to 23 in the sample at hand.
Nests are placed in crevices and hollows in trees near water, 10 to 70 feet high.
Redhead: Aythya americana (Eyton).—This duck nested at Cheyenne Bottoms, Barton County, 1962: 9 eggs found May 31 (M. Schwilling); also reported to have nested at Cheyenne Bottoms about 1928 (Tordoff, 1956:316).
Canvasback: Aythya valisineria (Wilson).—This duck nested at Cheyenne Bottoms, Barton County, 1962: 14 eggs found June 20 (M. Schwilling).