Hi guys! I would love any pointers on my current situation. I raised this hen from an egg, and ever since about 6-8 weeks, she has had recurring rales and fatigue, usually induced by extreme temperatures (she recovered from infectious coryza without major symptoms). I have been able to help her with ice water and fans over the summer, and hot tea and heat lamps over the winter, and she fared well. However in this perfect spring weather she's been really struggling. She sits by herself and wheezes for most of the day (her beak/throat is not visibly blocked), is extremely frail, never fully molted, and has a declined appetite and empty crop. She sneezes constantly, and has laid shell-less eggs before stopping production, but still has regular discharge. Though these worse symptoms are new, she's been exposed to the flock for over a year without any other bird having a similar decline. I'm keeping her separate now and giving her VetRx and supplements, but I would love any information that could point to the root cause of her issues, I haven't been able to come up with anything through the research I've done. Thanks for reading this far!