While driving to Point Reyes National Seashore, I noticed a group of waterfowl in a waterway, so I decided to check them out.
This is the smallest dabbling duck in North America. Males have a cinnamon-colored head with a bright green crescent that extends from the eye to the back of the head. In flight, both sexes flash deep-green wing patches.
The females are light brown, with plumage much like a female Mallard. They lay an average of 8-9 eggs.
These birds have closely spaced, comblike projections around the inner edge of their bills. They use them to filter tiny invertebrates from the water, allowing the ducks to capture smaller food items than other dabbling ducks.
The Green-winged Teal is very common and widespread, occurring in marshes, rivers and bays. In the Summer, it can be found in open country near shallow freshwater lakes and marshes.
Green-winged Teal have an extensive wintering range, having been recorded as far north as Alaska and Newfoundland and as far south as northern South America.