Yes, thank you this matches what I found, I have been reading everything I can find on it. It’s a symptom vs a condition. They are not nor have they ever been on medicated feed, I didn’t see that as a cause, good catch!
Causes of this symptom I found: Vitamin deficiency, injury, poisoning/toxic plant/food or it can be a precursor to illness like Mercks or AI ect. To me it seems like it really could be anything that stresses their systems.
I feel like I can rule out Vitamin deficiency (unless she has some metabolic abnormality that isn’t allowing her to absorb one of those vitamins.) I have feed all of my birds the same things and she is the only one showing any signs of this.
Illness - I have been biting my nails for the last 48 hrs checking them every 4 hrs for the slightest sneeze and nothing thank goodness, absolutely nothing. Still monitoring closely we are at 48 hrs with nothing.
Toxic plant/food - possible but again they all eat the same foods including the new BSF Larvae I got.
Injury- This seems most likely. I am not out there 24/7 and they are dare devil teens.
Treatment seems to be Poultry cell or Rooster Booster in water for a few weeks and/or Black oil sunflower seeds. I am doing both. This seems to be working, she is improving either because of the supplement or the possible injury I can’t see is healing.
Mainly I am just puzzled as to how this happened to prevent it going forward. I am also going to throw away 40 dollars worth of BSF because omg what if there is a toxin in there???