Help! I just had two chickens die from impacted crops. (At least that's what I'm suspecting) I'm fairly new at having backyard chickens. I've been taking advice from my dad who had chickens when he grew up. And he's never had this problem. They always have fresh water and food and are let out to graze occasionally. I feed them laying crumble and incorporate grit by tossing some on the ground in the pen. I just don't know why their crops are getting impacted or souring.