A woodpecker comes to the tree just in front of me. It has a black-and-white barred back. It disappears into the tree. Then I see that it inspects a hole in the trunk. Climbs in it and pulls out it's head. Curious and wary it looks around. When it climbs out of the hole again it starts to inspect broken branch ends. It chisels off some bark and starts to drill into the wood.