If a woodpecker is beating its wings 850 times per minute, and a hummingbird is beating its wings 5 times faster, we can calculate the hummingbird's wing beats per minute by multiplying the woodpecker's wing beats by the factor of 5.
Hummingbird's wing beats per minute = Woodpecker's wing beats per minute x 5
Plugging in the value for the woodpecker's wing beats per minute:
Hummingbird's wing beats per minute = 850 wing beats/minute x 5 = 4250 wing beats/minute
Therefore, the hummingbird is beating its wings 4250 times per minute.