The birds stashed their acorns in a wireless antenna in Central California. A video that’s going viral this week shows technicians opening a compartment on the antenna and unleashing a flood of acorns. In all, an estimated 300 pounds (35 to 50 gallons) of nuts fell out.

“They’re pretty famous for finding places to hide acorns,” says Koenig, who has studied the bird for years. Koenig says he once saw a traffic signal stuffed so full of acorns that it was unreadable.

Typically, the acorn woodpecker stores nuts one at a time, digging a small hole in a tree and pushing in a solitary acorn for safe keeping. That keeps it dry and somewhat protected from thieving squirrels. The birds have been