These shovelers are ducks, more correctly called northern shovelers.
A couple of weeks ago, we visited nearby Chincoteague National Wildlife Refuge. This pair was feeding (nearly) non-stop during the 20 minutes we watched them.
Northern shovelers feed by dabbling and sifting in shallow water and prefer freshwater lakes, marshes and wetlands with muddy edges.
The northern shoveler is sometimes called the spoonbill. It has the largest bill of any duck in North America. This bill is the most prominent feature; it is also longer than its head.
As in most species, the male is the more colorful with a black head that shows iridescent green in bright light. The male has a black bill, white breast, and its abdomen and flanks are chestnut. The black rump may also show iridescent green.
Females are mottled brown with darker upper parts and a grayish-orange bill. Both genders have yellow eyes, orange legs and feet, and a powder blue wing patch visible when flying. This pair was more interested in foraging than flying.
Northern shovelers are monogamous, mating after a courtship display that includes various calls, wing flapping and head dipping.
This duck's summer range extends from Alaska through western and central Canada south to the mountain regions of Colorado and northern New Mexico, and as far east as the St. Lawrence River and Massachusetts Bay. Like some humans, they escape winter temps and migrate to the Pacific coast, southern U.S., the Caribbean and Mexico.