Hello all, This forum has been so valuable to me for information, and so I want to thank you for your help in advance. One of my chickens, a white-crested black Polish, has a large lump on her left breast which is getting bigger. It has been growing larger over the past three days, and today, it seems to have affected her ability to walk. I did a search, but mostly found crop issues. Her crop is in the center of her chest, and I can feel it. This lump is further to the left. Thanks again. This is a picture of her from an earlier date. She is about nine months old now.