Baby Scrub Jay

[GimpieLover]

My friends parent found a baby blue jay. I took over and am hand feeding it with kaytee exact formula and crushed cat food. There is a small white scab looking thing in the corner of its mouth. Is this canker? the bird still has a big appitite and it is not in the back of the throat. Just the corner of the mouth. I don't know if it could be anyhting else and I dont want to medicate for canker if its not. Any advice. I can get pictures up tomorrow.