The first bird on this post is considered a "Squeaker." When you're breeding racing, homing pigeons that is just a fledging.. You can tell by how small it is.
An actual racing pigeon will have a band on it's foot with a number and the year of birth. There is a registry that you can go to, to check for missing birds.
This bird was definitely NOT in a race.
Sometimes, people will loose a "First Flight" bird. It takes time and patience to train a good Racing Homer.
I'd sooner say if there's just a plain band on, it's not a very important bird.
They will eat just about anything, just not sunflowers in the shell. Chicken feed might not be good either but a pigeon will eat just about anything. People that are into racing have they're own special food......
One pigeon lover will never tell another his secrete blend!