The place I got my eggs from does not have that species (just Pekin, Muscovy, Welsh Harlequin, and Cayuga). I just looked Anconas up and they are beautiful! Kind of wouldn't mind if he were somehow magically an Ancona.

But it did cross my mind that perhaps he is a hybrid? His egg was very dark grey, which fits with a normal Cayuga.
He does have all black legs and feet, but his lower bill does have some lighter mottling on it. An odd little guy, but I love him! But yes, we will see soon enough when he gets his big boy feathers in. ^-^