Tanager?

(Iowa south of Amana)

We have 5 small birds smaller than a sparrow, the body is Gray and Brown on the back and wings but has red tints in it, the stomach is bright red (close to cardinal color - not Robin color). If I was rating it I'd say the bird was half red and 1/2 brown gray. No top notch like a cardinal. Head reminds me of a Chickadee but I'd say their size is larger than a Chickadee. Don't know what else to tell you, except since they've been around last summer and this spring we've had a lot of beautiful bird singing we've also had Cardinals too.