Mareca
Wigeons

Trivial name	Latin name
Eurasian Wigeon	Mareca penelope
Gadwall	Mareca strepera
Falcated Duck	Mareca falcata
Chiloe Wigeon	Mareca sibilatrix

comparison of wing and tail configuration¹

¹ According to Hartmann (2000a, 2000b and 2016)