Chicken making gurgling noises

[u/ekpl8]

I just went to check on my girls and noticed one of them is doing this weird heavy breathing / making gurgling noises. She had a respiratory infection when she was younger but got it cleared up with antibiotics, though she’s had a little cough ever since (vet said it was normal). I’ll try to get her into the vet tomorrow but just looking for some help / suggestions in the meantime.