Hummingbirds have two amazing ways to fly through tiny gaps

High-speed cameras have revealed how hummingbirds negotiate their way through tiny gaps while in flight, which happens much too quickly for the human eye to properly see. The findings could inform new techniques for flying robots. Hummingbirds feed on nectar and have to fly through tiny gaps in cluttered foliage as they flit from flower to flower. Marc Badger at the University of California, Berkeley, says it was while watching hummingbirds from his window that he decided to investigate how they achieve this. "When a dominant male would come and chase an intruder away, that intruder would fly through a bush," he says.