Until yesterday I’d never seen a crested duck, distinguished by a tuft on its head. Had to read up on this species that apparently has been around for more than 400 years. The tuft is a genetic deformity in the duck’s skull. Sometimes the crested is bred to be a pet but the deformity requires the duck to be mixed with a non-crested species for the offspring to survive and not all will have tufts.
67Steffen.com 
Reminds me of a poodle with a show cut!
Quite unusual.
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At first glance at a distance, I thought the duck might have a brain tumor. Most unusual.
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