Very old tree

This is an old Walnut Tree, just outside. It is completely hollow,all the holes you can see are inter-connected, birds enter by one hole and leave by another. It is home to Little Owls (heard but rarely seen) and Jackdaws, (Often seen and heard). They seem to co-habit very well. It is still very much alive and has Kilos of nuts in the autumn, when the crows come and harvest them. Also humans, they can be seen walking around, head down, searching, carrying plastic shopping bags.