Would they be fertile

[Arvor25]

I have 3 Cayuga drakes that go round my garden treading my Muscovy ducks
I wanted to know if they would be fertile ?
Has anyone ever hatched form these two birds
I don't normally cross any breeds but I love the Cayuga colours just wondered
Thanks

 

[shicks0211]

They will cross and produce Mules or hinnies, however the offspring will be sterile. 60% of the mules (male muscovy, female of another breed) will be male. The female offspring will produce eggs but can not hatch. The birds will be healthy, just sterile. I say they will cross..that is if the drake can catch them..lol The reason is because the muscovy are not derivitive of the mallards, which most other domestic breeds are.