My araucana hen has swollen or fluid filled is more breast area, kinda like a large soft jelly bag below her neck. She is laying eggs ok and getting around as usual. She may have had this for some time and I may not have noticed because she's just a big fat hen. My first thought: is it a large cancerous tumor? I hope not because I have been eating her eggs. If anyone can give me insight, I'd sure appreciate it.