ORIGINAL: CAelknuts
That is a hen ring necked duck. It is probably a young 'bird of the year', but there is no doubt in my mind that it is a ringneck. You'll notice the bit of white shading on the face, that is a dead giveaway for a ring neck hen.
I'm pretty sure you mean thats a dead giveaway for a BLUEBILL hen... However I do agree, that duck is either a ringneck or a bluebill.
Buck get a dna sample and send it to the laboratory! That will probably be the only way we'll find out. [8D]