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Duck: any of various swimming birds (family Anatidae, the duck family) in which the neck and legs are short, the body more or less depressed, the bill often broad and flat, and the sexes almost always different from each other in plumage.
These medical condition or symptom topics may be relevant to medical information for Duck:
Source - MeSH 2007
Source - CRISP
The following list attempts to classify Duck into categories where each line is subset of the next.
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