Blue-winged Teal (Anas discors)
Male Peep Call: The usual call of the male is a high, whistled peep.
Female Quack: The female quack is hoarse, but higher and shorter than the Mallard quack.
Blue-winged Teal, male peeps and female quacks, April 18, 2010. Vernon Marsh, Waukesha County, Wisconsin.
Palmer, R. S. 1976. Handbook of North American birds. Vol. 2. Yale Univ. Press, New Haven, CT.