The North American blue-winged teal (Spatula discors) is a dabbling duck that has sky-blue wing coverts, a green speculum, and yellow legs. 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. Blue-winged Teals have the highest annual mortality rate (reaching 65%) of all dabbling ducks; possibly as a result of hunting and long over-ocean migration. Its yellow legs are a distinction from other small ducks like Common Teal and Garganey.