Black-capped Chickadee at Titlow Park in Tacoma, Washington.

Mountain Chickadee near Cle Elum, Washington.

Chestnut-backed Chickadee taking flight. Photo taken near Bremerton, Washington.

Male Bushtit with a worm at Scenic Beach State Park in Seabeck, Washington.

Red-breasted Nuthatch near Bremerton, Washington.

Pygmy Nuthatch by its nest hole. Photo taken along the nature trail at the Leavenworth National Fish Hatchery near Leavenworth, Washington.

Black-capped Chickadee at Titlow Park in Tacoma, Washington.

Mountain Chickadee at Windust Park in Franklin County, Washington.

Black Phoebe by the Pintail Marsh of the Ankeny National Wildlife Refuge near Ankeny, Oregon.

Bushtit pair putting finishing touches on their nest. Photo taken at Fish Park in Poulsbo, Washington.

Red-breasted Nuthatch near Bremerton, Washington.

Pygmy Nuthatch near Cle Elum, Washington.

Black-capped Chickadee near Bremerton, Washington.

Chestnut-backed Chickadee near Auburn, Washington.

Male Bushtit near Port Orchard, Washington.

Wrentit near Manzanita, Oregon.

White-breasted Nuthatch at Turnbull National Wildlife Refuge near Cheney, Washington.

Black-capped Chickadee on a snowy day. Photo taken near Bremerton, Washington.

Chestnut-backed Chickadee near Bremerton, Washington.

Male Bushtit at Evergreen Rotary Park in Bremerton, Washington.

Wrentit near Manzanita, Oregon.

White-breasted Nuthatch at Steigerwald Lake National Wildlife Refuge in Washougal, Washington.

Black-capped Chickadee with a caterpillar snack at Nisqually National Wildlife Refuge near Olympia, Washington.

Chestnut-backed Chickadee hanging from a pine branch by Kah Tai Lagoon in Port Townsend, Washington.

Female Bushtit at Evergreen Rotary Park in Bremerton, Washington.

Male Red-breasted Nuthatch near Bremerton, Washington.

Pygmy Nuthatch by its nest hole. Photo taken along the nature trail at the Leavenworth National Fish Hatchery near Leavenworth, Washington.