I have a 16 week old Buff Brahma pullet l. This morning I picked her up and gently felt her crop area. It was pretty flat, but squishy. I'm wondering if she has sour crop? She eats grower/ finisher crumbles, has acess to a grassy run all day, and has constant access to grit and water. She is acting normally, eating, drinking, clucking, pooping. Her poop is normal as well. Should I be concerned? I haven't smelt any foul odors so far. What should I do?