Hey, My two khaki Campbell's have been doing strange movements lately, which I think is a mating thing. They put their necks down and shudder almost like they are vomiting and then all the hair stands up on their heads. They also bib their heads up and down a lot while swimming. I don't have any ducks, only the two Boys, are they happy enough doing strange dances to no body? They often do it when I come down to hang out with them, are they courting me? Lol.