[HesterF]

Read the replies above! You can show any pure breed duck - there are tens of different categories of show breeds so you need to look at a book or website to work out what is suitable for you. Ducks don't sell as well or fetch as much as chickens on the whole simply because fewer people keep them so there's less demand. You wouldn't be able to keep many large ducks in a dog house but it might be OK for small ducks like calls. You'd have to check it was well enough ventilated and could be shut at night. I said about food above too - I use waterfowl pellets but they also need access to lots of grass and foraging as well as water. There is no easy answer for you, you will have to read up on this.