Maybe it's the difference in the bale and the pellets? I only feed mine in a bale and they love it, plus it's good on the floor of their coop. For other greens I have been hanging either a cabbage or collards or lettuce on a bungee in my coop and they will work on that all day long. I agree with CovenantCreek too about the grass growing from the leftover scratch. When I clean my pen now I dump the alfalfa, pine shavings, chicken poop, and whatever scratch is in it in a big place grass wouldn't grow in my front yard. It is green now from the scratch seeds growing so maybe it will develop enough root structure that in the summer I can have a normal yard--in the meantime, the birds and squirrels are quite happy with me, lol!! Darlene