I have been worried the last week or so about my bird, as there is a spot right above her tail that is a little brown and sort of a bump, and she's been rubbing her head against it and nibbling on it a little. I thought it was a sore of some sort.
Come to find out, it's actually a gland that she uses to help keep her feathers healthy. She nibbles on it to get oil from it, then preens her feathers to keep them healthy, and the reason she rubs her head on it is becasue that's the only way she can get oil on top of her head. I just never really noticed her doing it before.
Very interesting stuff, I learned something new.
Oh, and, HEY SWP!.