So, Chickity Chick-Chick (7-week-old Dark Cornish) has this goiter on her breast, It's about the length of my thumb in the first picture, semi-solid--it has a little squish. I try not to press on it too hard but you can wrap your fingers around the edges. It seems to be between her skin and flesh because you can sort of move it, which I did in the first picture to expose it through the feathers." She's such a nice girl--very, very friendly and calm. She doesn't like when I make her turn her head for me, but otherwise It doesn't seem to really bother her. I haven't noticed any breathing issues or regurgitating. I just worry because she's still a small bird and it's so large and getting larger the bigger she gets. I've been trying to research this, thinking thyroid/iodine-deficiency type of goiter, or some kind of abscess but I didn't notice any initial injury. Was wondering if anyone had any ideas before I tried to find a vet that knows anything about chickens around here. I don't want to lose her without having tried. Second item, I have four or five girls with persistent sneezes but they all sneeze--Treat everybody with Tylan? That appears to be their only symptom is that I hear them sneeze a couple times in an hour, then they shake their heads and shower me with snot when they're perching on me. I've already run a week of antibiotics once before but it didn't seem to help--would preferably like to stay away from things with no withdrawl period. Thinking Tylan? Just nervous about giving them the wrong thing because I lost one of my first chicks right of the bat to an infection, and I sort of do blame myself for it.