
The Gadwall is a medium-sized dabbling duck with understated brown and grey plumage. Males are finely patterned grey with a black rear, while females resemble female Mallards but have a thinner bill. A white wing patch is the most useful feature in flight. The species feeds mainly on aquatic plants in shallow, vegetated wetlands. It also takes food brought to the surface by coots and diving ducks.
Locations where this species is supported by a dated first record, an unambiguous single-place outing or a reviewed assignment.