How do I get blue magpie ducks?

[Muddybranch]

What color of parents do I need to get a blue magpie? Is it possible to get a blue magpie from a black magpie drake and a black magpie duck?

 

[The Moonshiner]

You can't get a blue magpie from two black magpies.
You need the blue gene in the mix to produce more.