hi all

i noticed that there is blood on my lovebirds wing. it looks brown so i think i might have dried, i have provided a link with a picture below, but there seems to be more brown when she lifts up her wing.
she was out of her cage earlier on, so i'm not sure if she hit it or something?
she's only very young and isn't hand tamed.
any advice on how to approach this situation would be much appreciated.

picture: https://imgur.com/a/DoKqyUZ