I have adopted into my family a little boy who cannot walk. The crest on his head didn't work out in that area. He is around 7-8 months old now and he still looks like a female. He hasn't changed colors. We have a female as well who likes to pluck his feathers so now we have to keep them separated. They used to cuddle. Their calls are clearly different. We have dogs and cats who are fine with the ducks but we are still figuring out how to do this. Because he is a crested we are having a hard time finding help and answers on questions like development and care. If anyone has dealt with similar issues or even just plain old duck advice I would appreciate it!