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However, the ring-necked duck has a peaked, angular head
profile, distinctive white bill markings and dark upper wings that
distinguishes it from the scaup.
The "ringneck"
name is derived from a faint brownish ring around the base of the neck, which
is visible only upon close inspection. The legs and feet are gray-blue and the
iris is yellow. Ring-necked ducks dive in shallow water to feed on the tubers,
seeds and leaves of and aquatic plants. They also eat aquatic insects, snails
and clams.
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