Can anyone identify this bird?

Hello, I live in Bothell, Washington just outside of Seattle. This morning at about 7:00 AM I heard a sound that reminded me of a hawk screaming. However the sound was a bit small and short for a hawk so I decided to go outside and look. When I looked in the trees it ended up being a blue colored bird that stood roughly 6~8 inches high with a small tuft on the top of his head. The bird then went up to a higher tree and started pecking on the wood slowly. Please help me identify this bird! Thanks.