“Every cockatoo exhibited slight variations in its plan of attack. But the general strategy was the same: Each placed one or both of its feet on the fountain’s twist handle, then lowered its weight to twist the handle clockwise and prevent it from springing back up. As the parrots slurped water from the bubbling spout, their sharp beaks often left behind chew marks on the fountain’s rubber top.”

From the title I thought the batteries would stabilize the grid by discharging back into it but apparently that capability is not implemented yet. Still interesting that the stations increase demand enough that grid stabilization can occur by simply disabling battery charging.