A crow weighs down the end of a branch on a naked chestnut tree. With its beak, it snaps a twig from a smaller tributary branch and lets it drop to the sidewalk. It flaps over to another weak branch, and in a few short hops, makes its way to the branch’s narrow end, breaks off another twig and lets it fall. It repeats this two more times. On it’s last round, it finds the stick it wanted. It takes flight, carrying its stick away toward the west. It doesn’t return for its castoffs.