Carolina Titmouse

Very similar to the Black-capped Chickadee, this bird replaces it in the southeastern states. Living in milder climates, it has been reported to be less of a visitor to bird feeders, but it does come into suburban yards for sunflower seeds. Where the ranges of Black-capped and Carolina chickadees come together, they often interbreed. In these contact zones, they also can learn to imitate each other's songs -- causing great confusion for birdwatchers.