Someone was talking about grit. In the summer we will use chicken coop cleanings to liquid fertilizer tomatoes. We let it soak in buckets for a day the dilute it and apply. At the bottom of the buckets it always surprises me how much sand and grit is in them when we clean up. If you wanted to...
Alfalfa is very good for the birds. I don't like the pellets. The when mixing ratins fr othe species the pellets are the last eaten. Something about the Pelleting process.