Eta: I am working on an isolation pen, all my panels are being used for a broody.
Also going to be getting yogurt and probiotics, have done this in past and yesterday, just ran out.
HeadHen is one year old
This link is to my original post about this same bird, HeadHen.
https://www.backyardchickens.com/threads/chicken-with-funky-breast-crop.1598010/#post-27582555
As stated in the last post of that thread, HeadHen's crop is huge. During winter when she wasn't laying, she was "normal" or "even"...