Yes. There is one crested breed called Crested. They come in black and white. Other breeds can be crested but you cannot show them when they express this trait. Even Calls can have crests.At ideal poultry they sell multiple different breeds that are crested. My understanding is the created gene is dominant but a double dominant is fatal? Not sure if any of the crested are completely pure or if they have bred it into their purebreds to add the novalty of crested. Either way it’s fun and I’m already partial to our black babies.
Even show breeders breed crested to non-crested because it is in fact lethal. But you can only show the ducks with crests. That makes Crested ducks more difficult to breed.