I have one chick (about 4 months old) with an enlarged, mushy crop. This chick mostly stays off by itself (a new behavior) and her head is pulled down near her shoulders, as if she is cold. She is unusually mellow and easy to catch. I am worried about this chick. Any ideas or suggestions? I have 2 other chicks and an slightly older (6 month old) hen with watery eyes. They look teary with spit-like bubbles in the front corner. Should I be worried about this? The older hen is looking better, than a few days ago. Thank you in advance for any help or suggestions.