Squirrel Breakfast in the tree (Slo-Mo) 

so often the squirrels hang upside down to eat the nut with their two hands, hanging only from their rear claws. there's almost nothing to hang on to. they defy gravity for sure.
as you can see this tree has had a lot of squig activity with most of the bark peeled right back. also, the pigeons are pretty intelligent. they fly up to the tree and hang on like the squirrels thinking that might be how to obtain a free meal.