Yep, those are both roosters. See the long, skinny feathers hanging down on either side of their backs in front of their tails? Those are saddle feathers, and only roosters get them. They're also getting their long, rooster tail feathers.Those red wings are a good indicator of maleness, too.
If the person who sold you the birds sold you sexed birds, then I think you have a really good case for them to take the roosters back and give you your money back.
