Whats the most rare duck breed you can keep? Just curious cause I read an article talking about the importance of breeding rare birds and it got me thinking about looking into this. P.S. I am new here, but not new to ducks. I always skipped over this site because its backyard chickens. But I've noticed a lot of links popping up for this site so I figured I'd join. I have Khaki Campbells, Rouen Duck, Black East Indie Ducks, and a Call Drake, as well as pigeons and chickens (chickens are just for eggs, no special breeds).