I was at the 2010 Ohio National Poultry Show and I purchased some bantam birds from a breeder who had these nifty cages for sale. I'm pretty sure he built them himself. It has been the best cage I've ever had. I use it for birds when I'm segregating them for various reasons. I really want to buy/build some myself but I'm not sure where to get all the parts. I found one source www.poultrysupplies.com but I wanted to pick your all's brains to see if you know of any others. They didn't have the removable trays at that site. I know I must be missing something! P.S. please ignore the mess!