I found her outside on the lawn with a bunch of feathers around her. She has one small tear skin deep that I was easily able to clean with hydrogenperoxcide, superglue shut, and cover in blue coat. The other is latterally across her saddle 1 1/2 in long right above her pope's nose(Sorry it's what my grandma calls it) . I was able to clean it with hp, but when trying to glue stich it shut, she struggled and suddenly had an air sac showing out of the wound? As I couldn't get it back in and had no clue what it could be, I popped and re-cleaned everything. I was only able to glue stich have the wound, as there is missing skin that prevent the joining of the two sides. I did the best I could and covered it all with blue coat. Any ideas what the "sac" is or what else I could do to save her?