As nouns the difference between gadwall and mallard
is that gadwall is Anas strepera, a common and widespread dabbling duck which breeds in the northern hemisphere while mallard is a common and widespread dabbling duck, Anas platyrhynchos, whose male has a distinctive dark green head.
gadwall
English
Noun
(gadwalls)
Anas strepera , a common and widespread dabbling duck which breeds in the northern hemisphere.
mallard
Alternative forms
* maudelard, mawdelard
Noun
(
en noun)
A common and widespread dabbling duck, Anas platyrhynchos , whose male has a distinctive dark green head.
(
-)