I found that my local donut shop sells square buckets that have an opening that is 9&1/2 inches by 9&1/2 inches and are fourteen inches deep. They are similar to the square cat litter boxes. Right now my chickens lay in random things they have turned into nests. I'm trying to get them to lay in one place. I was just wondering if they are too small before I build something with them. Thanks for your help in advance.