I see a math error. These are 12 cubic feet. Only 6 square feet. That is enough for 6 birds if you like them at absolute max capacity, or 3 birds if you want to be a bit more humane.If they're 2' wide, 2' high and 3' long, that's about 12 sq ft each. With one sq ft per person, 3 girls to a boy, I could have 3 families or 9 females per crate.