We have here a couple of female Blue-winged Teal hanging out in a suburban Beaver pond located in a residential subdivision.
Wikipedia has this to say about Blue-winged Teal:
The Blue-winged Teal is 40 cm (16 in) long, with a wingspan of 58 cm (23 in), and a weight of 370 g (13 oz). The adult male has a greyish blue head with a white facial crescent, a light brown body with a white patch near the rear and a black tail. The adult female is mottled brown, and has a whitish area at base of bill. Both sexes have sky-blue wing coverts, a green speculum, and yellow legs. They have two molts per year and a third molt in their first year. The call of the male is a short whistle; the female’s call is a soft quack.
These birds feed by dabbling in shallow water at the edge of marshes or open water. They mainly eat plants; their diet may include molluscs and aquatic insects.
Blue-winged Teal are generally the first ducks south in the fall and the last ones north in the spring. Adult drakes depart the breeding grounds well before adult hens and immatures. Most Blue-winged Teal flocks seen after mid-September are composed largely of adult hens and immatures. The northern regions experience a steady decline in Blue-winged Teal populations from early September until early November. Blue-winged Teal in central migration areas tend to remain through September, then diminish rapidly during October, with small numbers remaining until December. Large numbers of Blue-winged Teal appear on wintering grounds in Florida, Louisiana, and Texas in September.