plural of Mexican duck

Anas laysanensis, an endangered dabbling duck endemic to the Hawaiian Islands

plural of Labrador duck

plural of Laysan duck

Anas diazi, a dabbling duck in the genus Anas which breeds in Mexico and the southern USA.

A medium-sized dabbling duck, Anas fulvigula.

Camptorhynchus labradorius, an extinct sea duck that was never common, believed to be the first bird to become extinct in North America after 1500.

Biziura lobata, a highly aquatic, stiff-tailed duck native to southern Australia.

Aythya nyroca, a medium-sized diving duck from Eurasia

(epistemology, philosophy) A form of abductive reasoning, application of intuition, or common sense regardless of technical parameters, to identify an ostensibly unknown subject by observing that subject's characteristics.