Discovery reported on UBC research that looked into how hummingbirds navigate their flight patterns, and quoted UBC biologist and study lead author Roslyn Dakin.
“When objects grow in size, it can indicate how much time there is until they collide, even without knowing the actual size of the object,” said Dakin in a statement. “Perhaps this strategy allows birds to more precisely avoid collisions over the very wide range of flight speeds they use.”
