Optimal nesting habitats include semi-permanent wetlands, ponds, and seasonal wetlands surrounded by grassland (Brewer et al. 1991). Nests usually on the ground among tall grasses or sedges, usually near water; seems to prefer to nest in native grass communities in good range condition (Gammonley and Fredrickson 1995). Stock ponds with well-developed emergent vegetation provide locally important brood habitat (Gammonley and Fredrickson 1995). In B.C., breeds from sea level to 1,200 m, and nests are found as far as 50 m from small water bodies (most within 23 m of water) including fresh and brackish water marshes, bogs, swamps, and sloughs (Campbell et al. 1990).
Brewer, R., G. A. McPeek, and R. J. Adams, Jr. 1991. The Atlas of Breeding Birds of Michigan. Michigan State University Press, East Lansing, Michigan. Xvii + 594 pp.
Campbell, R. W., N. K. Dawe, I. McTaggart-Cowan, J. M. Cooper, G. W. Kaiser, and M. C. E. McNall. 1990. The Birds of British Columbia. Vol. 1 and 2, Nonpasserines. UBC Press, Vancouver, B.C.
Gammonley, J. H., and L. H. Fredrickson. 1995. Life history and management of the blue-winged teal. USDI National Biological Service, Waterfowl Management Handbook 13.1.8. 7 pp.