I am wondering about my own chickens, too, and have my pics up waiting for some replies, so I can't really tell you for sure, but the last picture looks of the same coloring as 4 of what I have and I'm pretty sure they are called "Golden Comets" or possibly "Red Sex Link" - and those (2) names might be the same thing from what I've been reading.
Whatever you have, they sure are pretty birds!