Seven Robins and the Female Cardinal in the Backyard Tree

I thought the robins used to fly south! Find the female cardinal.

The other day there were two red cardinals in the tree in the backyard. I couldn’t see them no matter how I squinted. Could really see with the 70-200mm camera lens though.  The neighbors in the back must have a feeder and the birds congregate.  As I waited for the stunning red cardinals, which did not appear, I counted at least 7 robins in the tree.  I didn’t see the female cardinal until I put the photos into  the computer.  Don’t robins fly south anymore?? I thought they were the first sign of Spring so that isn’t right.  I am glad I am not a bird.  Especially in winter. And what about all the cats in the neighborhood? Can’ t be easy.