I have some turken chicks. I have had them since Oct 4th. Their bedding when they were given to me was straw, I switched to hay and put some dirt and sand/gravel in with them. They have been eating medicated chick mash and drinking water. I change their water 2x a day and they eat their mash out of whole(not broken) mussell shells. I took them outside as it was warm yesterday, and let them get some sun and check out the bugs and grass in the yard, in a little corrall I made them. The guy I got them from said they would like soured oats, so I gave them about 2tbsp(total) of soured oats on a separate lid in their tub. Just a little bit ago I noticed that 3 out of the 6 have a lump about the size of a small grape on their breast where their neck ends and their breast starts. It is soft like dough. I have never noticed this before. They are eating and drinking, but have been tearing up their hay(with shredded newspaper under). They just started doing that as well. Just tearing all heck out of their little tub. I'm kinda freaked out about it, so please let me know whatever you can to help. Is that lump normal? Is it an impacted crop? Will that kill them? Is there anything I can do? These are my first chickens and I'm worried about them. Should I not give them soured oats? Please help. Thanks in advance.