Welcome to BYC. Glad you decided to join our flock. You definitely have a Red Sex Link rooster. Red Sex Links are egg laying hybrid machines that can be easily distinguished by color from hatching. Male chicks are whitish, females are reddish, and that color distinction remains with them throughout their lives. RSL roosters are white with some reddish feathers in the saddle area, and hens are reddish with white underfluff and some white tail feathers. Please feel free to ask any questions you may have. We are here to help in any way we can. Is this your only chicken? Or your only Red Sex Link? Do you have any RSL hens to go with him?