Thanks for posting so quickly every1!!!
Other than this thing, he/she's very healthy! Usually, I check for canker, but I forgot to this time, I'll check. A bit skinny, but what can you expect from a street pigeon

Has no fleas, despite some pretty... uuhhh... chewed up flights. Eats on her own, can fly perfectly, walks perfectly, wonderful condition really! Also isn't pooped on (the birds at DufferinFlock are). Has the nicest colours, like Tyson, black, white flights, but he also has these three wonderful spots on his rump (LOVE THEM). He can fly, I've become a bit awesome at catching pigeons (If I do say so myself).
I know the dosage, so I'll get to that triple sulfa.
@Charis, no, its a bit closer to the centre of the back, but almost at the joint.