nminusyplusm
Crowing
That's similar to what I'm doing. Mine's about 2' deep and I only have 5 birds. I periodically fork down deeper to loosen the soil and give them access to giant grubs. The soil at the bottom is so much richer than it used to be.Mine will not be as deep as a meter either, but I'm on dirt and planning to loosen up the whole dirt floor so that eventually *maybe* it might get almost that deep.