A drake will take what ever the female will give him. I've seen it just about everywhere. However, I've noticed things get more "physical" around water!
As far as pain, the world will never know what a crested feels because we're not the animal. By the looks of the crested, they seem to be feeling fine when you observe their behavior but who knows if it causes them discomfort. When an animal is born into pain and it's all they know is it really...
In a nut shell because the crested and the pekin carry the crested gene (recessive) there will be a percentage of offspring whos brain will develop outside it's skull and it will die in the shell. If this is something you can live with, that's up to you. I'd highly recommend finding a mate for...