Einstein, my eight-month-old red sex-link hen, has a bizarre cough/sneeze that sounds like she's crowing. Her ruff sticks up and she keeps her beak open after she makes the sound. She appears to be eating and pooping normally. Her nostrils don't look congested, but her breathing reminds me of a dog growling. I haven't given her any medications yet. Any suggestions for what I should do next?