Humming Bird Sleeps

Humming bird would take the lead, then she'd grow hungry and stop for a snack. Then heron would cat up and pull ahead. A humming bird would fly like the wind to overtake heron and spring into the lead again. By sunset, humming bird was way ahead of heron, but she was also way exhausted. When humming birds sleep, they really sleep. It's called torpor, and it's kind of like a minni hibernation.