I recently hatched ducklings in my Kindergarten classroom. Out of the 11 that hatched, I took 3 home to raise (I also raise chickens and pigs). This is my first time having ducks and from reading these forums I have come to realize that 2 of the ducks that I took home, choosing them because of their "mohawks" are actually crested ducks and it is a genetic defect. I was never planning on breeding the ducks, but is there anything I should know about their care or raising them? The 3rd duck does not have the crest. I included a picture (though not a great one) of one of the crested ducks when it was a few days old. They seem to act just fine.