A flock of tiny birds are systematically moving through the oak tree outside my window this morning. Jumping from branch to branch, upside down and then right side up.

I can't tell what they are eating but they are energetically stripping something from the tree. Early morning sun shines on the tree creating deep shadows obscuring some of the birds. Finally they are done and take flight.

The stragglers hang back for one last bite and then they too jump into the air and fly away.