As the post reads....this is a traveling decoy. It will be traveling to many areas that are not common to Black ducks.
That is quite true, however, the vast majority of ducks will decoy into a spread regardless of specie .
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Very true--as I recall, last year during his stay in Maine Donnie the Mallard (and a few friends) mostly attracted big flocks of ringnecks. (Not to mention at least one woodie my partner missed . . . . .) He got a little closer to what he was supposed to do when he decoyed in a black on the last day of his stay. As far as my results showed, he was pure poison for attracting park ducks--not that I'd complain about that.
How 'bout an eider this year? We could make it feel at home at the north end of both coasts, but inland and down south it would be as out of place as me chasing tarpon or Dani up here after brookies. But that big white body is real visible, and I bet it would help pull ducks in.