When hummers are not eating, they may be perched on tiny branches or wires. They look like they're resting, but they're not! Their bodies are actively digesting. A hummer has a tiny stomach and a crop, the little storage pouch in their esophagus. They digest food quickly. It takes about four minutes to drain about half the nectar into the stomach and intestines. It takes about 10 minutes for a fruitfly to pass through the bird from one end to the other. Once the pouch is full, the hummer can't eat again until the crop becomes half empty. Hummingbirds perch or rest nearly 80% of their day—but the rest time is still focused toward refueling their tiny bodies.