To avoid crashes, parakeets favor left or right

"By having a natural mechanism where populations of birds are predisposed to choosing different flight paths around obstacles, an entire flock could avoid situations where they block each other, slow down, lose time, and expend more energy," says Partha Bhagavatula. (Credit: Jim Bendon/Flickr) New research may clarify how birds fly in flocks without running into each other.


