My Grandparents had bird feeders in their backyard and they had a wide variety of birds visit them. Mostly Cardinals and Swallows, but they did have a mean old Blue Jay that scared all the birds and even the squirrels away. I took a few pictures of the cardinals. I wanted one of the Jay, but it didn't want to be seen by us human folks so he hid on the opposite side of the feeder... the bum!
If you click on the pictures you can see the Cardinals much clearer. :)