For the one in back I'd say Buff Brahma cockerel and for the one in front, since I can't see the comb type, I'll say Barnevelder cockerel or Partridge Plymouth Rock cockerel. What type of comb does it have?
@Shellz - Dark Cornish cockerels would be more chunky, brick-shaped, and would have thicker legs than this bird.
Guess I was thinking of a badly bred Dark Cornish, like I got from a hatchery. Right about the legs, though. They are quite thin. A pic in the right light would help.
I'm definitely no expert, that's for sure! It's fun guessing though.