Thank you all for the replies. We were looking at what is called diamond dust used on baseball fields or what is called 23A wich is a little bigger lymestone. The crushed gravel would be very fine as well. Sand, I like the idea of easy maintenance for sure and that is what were trying for. Any concerns with that washing away more than the others? We have wooden structure at the bottom of the pen to prevent that, but we have a lot of wind out here. Looking for something that will be heavy enough to stay put, but be safe for our birds. I will definately see it before I buy it. Thanks again, Larry (Lars) Hanson
Oh I was also concerned with what they would put into their gizzards, and what would be the best for them. Thanks again.