I do, but my call drake is very much the leader of the pack.
I visited a senior breeder yesterday and he told me this:
Since he was looking for the origin of the Cayuga he crossed brother and sister for a few generations. Then he got a splash coloured Cayuga and he was so excited! he taught to have found the original color.. But when egg laying season came along the eggs were very small.. After some investigation it turned out his call drake did mate with the cayuga. Don't tell me how that's possible....
But one of my ducks (not Cayuga or Call) is definitely impregnated by my call drake this year we found out when they hatched.

They tend to be very good at it.