Downy Woodpecker, Picoides pubescens
Downy Woodpecker, female, 5/10/05, Beech Forest, Provincetown, MA
This female mated with the male shown in the next two pictures down -- see the fourth picture, with only the male of the pair visible.
Downy Woodpecker, male, 5/10/05, Beech Forest, Provincetown MA
Downy Woodpecker, male, 5/10/05, Beech Forest, Provincetown, MA
Downy Woodpeckers, 5/10/05, Beech Forest, Provincetown, MA
Downy Woodpecker, male, 12/25/07, Rancho San Antonio
Downy Woodpecker, female, 10/7/06, Edwards NWR, Alviso
Different views of the same female Downy Woodpecker.
Downy Woodpecker, female,  11/5/06, Edwards NWR, Alviso
A month later in the same place, looks to be the same bird.