Is it okay to feed chickens and ducks hay/grass?? I read somewhere that they shouldn't have pieces longer than 2". Something about getting caught in their crops??? I was thinking about using hay for bedding if it's not too expensive. The straw I've been getting is clumped together, like glued, and the chickens can't/don't scratch it apart, so the poo just stays on top and makes a mess!! It's hard to pull it apart!!!