Definify.com
Webster 1913 Edition
Waterfowl
Wa′ter-fowlˊ
,Noun.
Any bird that frequents the water, or lives about rivers, lakes, etc., or on or near the sea; an aquatic fowl; – used also collectively.
☞ Of aquatic fowls, some are waders, or furnished with long legs; others are swimmers, or furnished with webbed feet.