Bird plus goggles equals new insight into flight physics

Unexpected vortices form in parrotlet’s wing wake

Pacific parrotlet in laser goggles

SAFETY FIRST To study the air flow produced when birds fly, scientists trained a Pacific parrotlet named Obi (above) to fly through laser light. To protect the bird’s eyes, custom-made laser goggles were a necessary precaution.

E. Gutierrez/Lentink Lab/Stanford Univ.

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