What is any lamellirostral bird, as a duck or goose; -- so called because it sifts or strains its food from the water and mud by means of the lamell called?

sifter — (Zoöl.) Any lamellirostral bird, as a duck or goose; -- so called because it sifts or strains its food from the water and mud by means of the lamell. (Webster's 1913.)

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