Hopefully, they don’t have wet pox. Here is a picture below of a couple of yellow plaques inside a beak of a chicken with wet pox. And here is a link to read with more pictures of wet pox in the airway or trachea:
https://www.hyline.com/aspx/redbook/redbook.aspx?s=5&p=35
https://www.hyline.com/aspx/redbook/redbook.aspx?s=5&p=35
