Canker in 'tame' feral pij?!

[mollymurphy]

Hi everybody.

I keep my horses on a farm which farms corn, maize, barley, etc. and there are always loads of collard doves, wood pigeons and stock doves stealing it all! Up until today, i've never seen a feral pigeon there. He appeared out of nowhere, stood right next to my horse. I threw him a bit of bread, and he ran to it like he'd never been fed! But he never actually ate any of it - just pecked at it. Me and my sister thought this was odd, so walked over to him and picked him up - he seems to have no fear. We put him in a stable to see if he could fly, and he can. If you look at the attached pics (sorry for the bluryness!), you'll see that his beak is out of line. And if you look really closely, you'll see something in his mouth/throat. I've heard of canker, but never actually SEEN it. Any advice?
He fell asleep in the car on the way home, and is now asleep in our dining room. Is that a bad sign?
His crop is really empty. We've got loads of pigeon food, but when i put a dried pea in his mouth, he wouldn't swallow it and i didnt want to force him because of this 'blockage' that he seems to have. I've got chick crumbs too. What do you think i should do?
I'm able to take him to the vets tomorrow if you think they can treat the suspected canker.

Thanks very much.

Louise.