I have three male geese and my rooster always shoos them off and defends his girl's honor durring their breeding season. I've never had a problem with interspecies copulation.
on an unrelated note, is anyone in the southern Maine area looking to trade fertile eggs? I am going to buy some if I can't find anyone willing, I need some new blood and its more fun to get some one else's line than to get some thorough breds, to me anyway!
I have mix breed fertile eggs... my birds are listed below. I'd gladly give you a dozen... I'm a ways up though... Litchfield.