Northern Prairie Wildlife Research Center
Table 18. Sex compositions of adult ducks found at mink dens (from Eberhardt 1974).
a In decreasing order of abundance: blue-winged teal, mallard,
gadwall (A. Strepera), pintail (A. acuta), northern shoveler(A.
clypeata), and green-winged teal (A. crecca).
b In decreasing order of abundance: ruddy duck (Oxyura jamaicensis), redhead (Aythya americana), canvasback (A. valisineria), and lesser scaup (A. affinis).