Chestnut-backed Chickadee at nestbox

A pair of Chestnut-backed Chickadees was inspecting a nestbox at my place in the Coast Range west of Willamina in Yamhill County, Oregon. But a House Wren and a pair of Tree Swallows were contesting their claim, and it remains to be seen who will actually occupy the house for the nesting season.

A short video shows some of the Chickadees' activity here:

http://www.youtube.com/watch?v=hSqbIsC8m_M