My 1 year 10 month old Easter Egger has been wheezing, open mouth breathing and sneezing a lot lately. She had this same problem (minus the sneezing) a few months ago and it was so bad we had to take her to the vet and they had to put her on oxygen. But she made it and we took her home and medicated her for about a month and she got mostly better. She seemed to have a small amount of chronic wheezing when scared but none of the other birds seemed affected. The vet never actually figured out what the exact problem was and it seems to have come back. She also stumbles almost drunkenly around. Her poop is normal, she is eating and drinking as she always does and none of the other birds are having this problem. We have put her in quarantine inside the house for now as it's been incredibly cold out and the rest of the flock was picking on her. I have a video of her sneezing and wheezing which I'll put below (i apologize for the low quality and shaky cam.) There's a bit at the end where you can hear her wheezing I'm considering taking her to the vet. Is there anything I can do at home?? What do y'all think it is?