Two Kinds of Woodpeckers
The big one is a newly fledged juvenile red-bellied woodpecker faintly showing its first signs of red around the head, too soon to tell if it is a female or male. The smaller one is a downy woodpecker. You can see the size difference.
Juvenile Red-bellied Woodpecker (melanerpes carolinus)
Downy Woodpecker (picoides pubescens)