Planet Earth

Scientists (finally) figure out why birds don't crash into each other.

Seriously, Science?By Seriously ScienceSep 29, 2016 11:00 AM
Tambako the Jaguar
Tambako the Jaguar

Newsletter

Sign up for our email newsletter for the latest science news
 

It’s a simple question that you’ve probably never thought about: with all those birds flying around, how come you never see two birds crash mid-air? To answer this question, researchers put parakeets (aka budgerigars) into an air tunnel and had them fly towards each other. They found that birds have evolved a simple way to avoid mid-air collisions: each bird always veers right and changes altitude. The authors suggest that these same strategies could be applied to airplane guidance systems. Now if only the same rules would apply on a crowded sidewalk!

Strategies for Pre-Emptive Mid-Air Collision Avoidance in Budgerigars

“We have investigated how birds avoid mid-air collisions during head-on encounters. Trajectories of birds flying towards each other in a tunnel were recorded using high speed video cameras. Analysis and modelling of the data suggest two simple strategies for collision avoidance: (a) each bird veers to its right and (b) each bird changes its altitude relative to the other bird according to a preset preference. Both strategies suggest simple rules by which collisions can be avoided in head-on encounters by two agents, be they animals or machines. The findings are potentially applicable to the design of guidance algorithms for automated collision avoidance on aircraft.”

1 free article left
Want More? Get unlimited access for as low as $1.99/month

Already a subscriber?

Register or Log In

1 free articleSubscribe
Discover Magazine Logo
Want more?

Keep reading for as low as $1.99!

Subscribe

Already a subscriber?

Register or Log In

More From Discover
Recommendations From Our Store
Shop Now
Stay Curious
Join
Our List

Sign up for our weekly science updates.

 
Subscribe
To The Magazine

Save up to 70% off the cover price when you subscribe to Discover magazine.

Copyright © 2023 Kalmbach Media Co.