i have a chick - 2 months old - who lives in a run outside with other chicks. i noticed today she is lethargic and something is wrong. i brought her in the house gave her food and water with vitamin/electrolyte mix and a little bit of tetracyclene. her breathing is labored and raspy. she cannot straighten her neck, it is in an s shape and when i try, gently, to straighten it out, she opens her beak really wide. please help! thanks!