The deer forage mixes are designed to be palatable and nutritious. You will get a lot more for the money if you actually plant it. If you free range your birds, let it get established, and provide access. If the birds are confined, cut and carry. I use the mixes to, but I would consider a waste to sprout and feed them. Try planting it, and see how it does for you.
Shoot yeah I'm planting a row in the front of my garden, and broadcasting a little on the back half where we keep them.
I plant to harvest a good bit of seed as well as let some sow itself...