It is common or do any of you recommend using hay as bedding in your chicken coop? I got a book for Christmas about chickens, and the author said straw was good but chickens would eat hay and it may get stuck in their gizzard. This could potentially cause gizzard impaction? I've seen some hay in their poop recently as well. This concerns me. Should it? I noticed my dozen eight weeks old chicks all have a slight bulge in their left breast. Am I paranoid? Is that their crop? Sorry about all questions. 1st time owner & want to make this successful.