This birch looks pretty dead with all its bracket fungi and that fine woodpecker hole, but the top of the tree has lively branches and twigs with budding leaves. In fact, you can see some adventitious growth with young leaves in the photograph.
I like the porch like bracket fungus above the nest hole.
This photograph shows the lowest of the beaver ponds at Bamff so far. I took it because the water had such a remarkable green reflection.