University University of QueenslandTo design a better drone, scientists could learn a thing or two from birds’ ability to maneuver through narrow spaces. Budgerigars can fly between gaps almost as narrow as their outstretched wingspan rather than taking evasive measures such as tucking in their wings. The researchers wanted to know precisely how birds judge gaps between obstacles before engaging in evasive maneuvers. “If we can understand how birds avoid obstacles, we might be able to develop algorithms for aircraft to avoid obstacles as well. They don’t see three-dimensionally like humans, due to the lateral placement of their eyes and lack of binocular overlap.