As you can see, I have no trouble finding Ruby Tuesday models on my back deck. As long as I keep seed in the feeder and spread some on the rail, cardinals are constant visitors. I feed them from first frost to about the middle of March. Then they can fend for themselves through the spring and summer. Of course there are several people in the neighborhood that feed them all year long, so I'm just fooling myself into thinking that they actually spend all summer searching for their own food.