The Rollerfeeder keeps those squirrels out of the bird feed like a bouncer behind a velvet rope, using a clever design that keeps the seed container upright while the outer shell spins around on an axle. Lightweight birds won't affect it, but once a heavier squirrel steps aboard, it starts spinning, resulting in a flying rodent face-plant.
As the birds in the area chuckle to themselves, the weighted bottom rights the seed container, ready for the next bird banquet. Just might be 80 bucks' worth of fun to watch. But remind me, why do we hate squirrels so much anyway?