The Acorn Cache
This is another view of spectacular Yosemite Falls. However, the thing that I want you to notice is the old dead tree to the left of the field.
This tree is used as a cache by the Acorn Woodpecker. As their name implies, the bird depend heavily on acorns for food and will drill holes into dead trees, and just about anything else. Then it will collect acorns and find a hole that is just the right size for the acorn. As acorns dry out, they are moved to smaller holes which require a significant amount of the bird’s time. The acorns are visible, and the group defends the tree against potential cache robbers like Steller’s Jays and Western Scrub Jays.
We were told that the bears in the area discovered this little cache and started stealing the bird’s acorns. The woodpeckers then began storing it acorns at least ten feet from the ground so that they would be out of the bear’s reach.