New 4 month old in quarantine, sounds congested

[BVH Chickens]

This is my first time posting, sorry if there is already a thread.
Just picked up 3 new birds from local farm. Other 2 birds seem fine but the 4 month old sounds congested, kind of like a long time smoker. She is eating/drinking well, good activity, eyes clear, no noted nasal discharge. I literally picked them up today. Is she just stressed from 2 hour transport or more to it?
We are organic and natural here, no drugs on hand. Started on ACV water today, never had luck getting chicks to eat oregano fresh. Any other ideas?

 

[Eggcessive]

Keep them in quarantine for a month from any other poultry. Watch for more symptoms. There could be a respiratory disease or crop contents backing up into the throat causing rattly breathing. Is there any sneeze or cough?

 

[BVH Chickens]

I am still monitoring for c/s, it sounds more like she is clearing her nose. She has been hiding, so difficult.

 

[BVH Chickens]

How do i attach a video? I took one this morning. It almost sounds like she is purring or blowing bubbles into milk.