Answer: smews

AnswerCrossword Clue
SMEWS

Diving ducks

SMEWS

Eurasian ducks

SMEWS

Mergansers

SMEWS
Eurasian diving ducks
SMEWS
Black-and-white ducks
SMEWSSmall mergansers
SMEWSMerganser relatives
SMEWSSmall diving ducks
SMEWSEuropean ducks
SMEWSMergansers.
SMEWSSawbills.
SMEWSDucks.
SMEWSOld World ducks
SMEWSDucks
SMEWSMergansers' kin
SMEWSSmall ducks
SMEWSWhite-crested ducks
SMEWSMergansers' cousins
SMEWSCertain mergansers