I bought an adult pair of Salmon Faverolles yesterday, they are currently in quarantine away from my flock. Seemed good yesterday, but this morning the hen has a bit of a rattle when she breathes. Both are just a year old, 2015 hatch. Hen is bright and alert, eating and drinking (if a little unsure of her surroundings). I can't see any discharge either from her nostrils or eyes. Any ideas what might be going on?
Weird rattle in New Pair
Good move on quarantining them.
It could be a number or respiratory illnesses.
Sometimes an illness can present itself when stressed, such as coming to a new home.
If it were me I would consider contacting your local agricultural agency or vet to see if they can perform a test to see if she has a contagious illness before introducing her to your flock.
The results of the test would determine how to go forward, unfortunately if it were something that could/will be contracted by all flock members and make them "carriers for life" some hard decisions may have to be made.