open mouth breathing?

[deavamarie]

One of my 2 month ld chicks started to open mouth breath! It seems lethargic but is eating and drinking fine! pooping good it even open mouth breaths when a sleep. Its not hot at all. only 75 cloudy and windy! its chirping but as its mouth opens and closes it makes a funny cracking sound! can anyone help?

 

[Wyorp Rock]

Welcome to BYC.

Can you post a video of her?

Have you check in her mouth/throat to make sure she has no obstruction?
Any signs coughing, sneezing, discharge from eyes/nose?

If there is nothing blocking her airway, she may have a respiratory illness.

Separate her so you can monitor her symptoms, food/water, poop and progress.

The open mouth breathing and chirping makes me suspect Infectious Bronchitis, but it could be a number of things.

https://www.backyardchickens.com/t/919968/infectious-bronchitis
http://edis.ifas.ufl.edu/ps044