Backyard Squirrel Maze 1.0- Ninja Warrior Course was uploaded on Mark Rober’s channel on YouTube in May 2020, it recorded 76.8 million views and 2.4 million engagements.
Mark Rober failed in his quest to find a bird feeder capable of stopping squirrels from breaking into the birdseed. So he created an ingenious eight-part “American Ninja Warrior”-style obstacle course for squirrels to protect his bird feeder instead.
It is an educational video with the inscription “Squirrels were stealing my birdseed so I solved the problem with mechanical engineering :)”.