The one with the head lower is definitely a hen, she is already laying, I'm not sure of the one with the head high. It doesn't have saddle feathers that I can tell, and not shiny but I'm not confident that it is a hen. I'll get different picture in the am.
The one in the front is a red sex link (also known as a golden sex link, golden comet, cinnamon queen, red star, and etc..) the chicken in the back is a hatchery quality Rhode Island Red rooster (known as Production Reds or Cherry Eggers).