I just noticed this on Trudy last night so I sprayed it with a Veteracin and and then put some antibiotic ointment. It’s just looks odd. I’m trying to figure out how she got it and which way the flap supposed to go? It looks like she scraped it going into some thing , not trying to pull out which is weird. Why would she push her head into space ? Perhaps a poultry fencing space ? Push hard enough to scrape a flap of Bill up? I would think the injury would have been trying to pull her bill back out of a space , not into one. Maybe Charlie bit her? But there’s no injury on top of her bill. Maybe the flap does go the other way and she was trying to pull her face out of some thing?