She sounds like she has stridor, a sound that is made when they have something in the airway, such as a small piece of feed, mucus, or swelling. Is she also sneezing or snicking? Does she seem in any distress? If she is relaxed and not having labored breathing, I would just watch her. Most times stridor goes away in a few hours or overnight, if the cause is a piece of feed in the airway. Here is a video of a silkie in post 1 with stridor that went away afterward:
Good to hear. I had a hen who would literally inhale her feed and for a few days at evening feeding, she would get this strider for several days in a row.