40 million bats exiting a single Texan cave run a gauntlet of snakes and hawks. Half the bats are babies on their maiden flight, so how will they survive? This is the biggest flock of bats on the planet, but strength in numbers is not their only defence. Massive Nature investigates how where and when you fly in the flock can make the ultimate difference between life and death.
Episode #103 / Length: 50 minutes