I have a large coop (apx 8x12) for my 9 chickens. It was a metal and plastic greenhouse that we re-purposed. The hens have tons of room up on their surround perches with trays underneath them filled with zeolite that I clean like a cat litter box. The floor I put cement pavers down that I can easily sweep and powerwash. In Texas the problem isn't winter - it's summer heat - so now the hens just have tarps hanging to block wind and in spring we take those up down so it's really just a roof with fort knox-like protection from night time predators from hardware cloth. The hens are out in the yard all day. They come out usually between 8 and 9 am. There's lots of bushes for them to have cover and although there are hawks around they seem to take very good care of themselves. I'm expecting my new incubator to arrive this week and will then hopefully win an auction next week on ebay for some indian runner duck hatching eggs. It will be my first time hatching and it's very exciting. I will raise the babies in a shower we're not using for easy clean up and we have a tiny tractor for visits outside when weather permits but when they eventually go to live outside I was planning on making a wooden box kind of thing for them to sleep in below the chickens in the penthouse. This way the ducks can benefit from the same night time protection that the chickens have. I'm hoping eventually to have somewhere between 4 - 8 hens (depending on how many I get too attached to) and a drake. Is there something I'm missing here? Is it ok for chickens and ducks to live together like this? Any microbes or personality problems that I'm not thinking about. Thanks in advance for any insights you might have.