In Physics class I learned Newton’s Third Law of motion: For every action there is an equal and opposite reaction.
The woodpecker flies, the feeder swings. You can see his thrust in the feeder’s tilt.
(photo by Marcy Cunkelman)
In Physics class I learned Newton’s Third Law of motion: For every action there is an equal and opposite reaction.
The woodpecker flies, the feeder swings. You can see his thrust in the feeder’s tilt.
(photo by Marcy Cunkelman)