Hi! My RIR hen has a tennis ball sized lump on her chest. I thought it was her crop so I shrugged it off but it's been there since Wednesday (that was the first day I noticed anyway). It hasn't gone down since then that I've noticed. They did get a bunch of left over salad from thanksgiving on Wednesday. I noticed it that night. That's why I assumed it was her crop. But like I said it hasn't gone down. How do I determine a crop problem from something else? I'll post pix but it's hard to see. I only noticed because she turned her head and had a big lump on the opposite side. She seems to be acting normally. She was enthusiastic about getting her scratch tonight like she always is.