Hi there, We recently (2 weeks ago) gave one of our silkies a few babies from a well respected feed store (who got them from a hatchery). They had not been exposed to any adult birds prior to ours, and no one but adult employees handled them. One of the babies was fine yesterday, but is now making this crazy cuckoo clock/childrens toy noise whenever it is breathing. I heard a kerfuffle this morning in the run, prior to going to let them out, so I don't know if she's scared, or injured, or getting sick. We have no currently ill birds, ( no illness for the last year) she shows zero sign of runny nose, no crackling sound in her breathing or lungs, and she is running around eating and drinking like everyone else. Anyone experienced this before? I just don't know what to make of it! And we do have experience with respiratory illnesses, as we were exposed a year and a half ago, and her symptoms don't look anything like what we had then.