Need for speed: How hummingbirds switch mental gears in flight

University of British Columbia zoologists found hummingbirds used two distinct strategies to control hovering and forward flight. Credit: Anand Varma Hummingbirds use two distinct sensory strategies to control their flight, depending on whether they're hovering or in forward motion, according to new research by University of British Columbia (UBC) zoologists. "When in forward fight, hummingbirds

Liked this post? Share with others!

Hexbyte Glen Cove

University of British Columbia zoologists found hummingbirds used two distinct strategies to control hovering and forward flight. Credit: Anand Varma

Hummingbirds use two distinct sensory strategies to control their flight, depending on whether they’re hovering or in forward motion, according to new research by University of British Columbia (UBC) zoologists.

“When in forward fight, hummingbirds rely on what we call an ‘internal forward model’—almost an ingrained, intuitive autopilot—to gauge speed,” says Dr. Vikram B. Baliga, lead author of a new study on hummingbird locomotion published in Proceedings of the Royal Society B. “There’s just too much information coming in to rely directly on every from your surroundings.”

“But when hovering or dealing with cues that might require a change in altitude, we found they rely much more on , direct visual feedback from their environment.”

The findings not only provide insights into how the tiny, agile birds perceive the world during transitions in , but could inform the programming of onboard navigation for next-generation autonomous flying and hovering vehicles.







University of British Columbia zoologists observed how hummingbirds reacted to a variety of visual stimuli using a four-meter flight tunnel. Credit: Roslyn Dakin

Hummingbird flight recorder

The researchers had hummingbirds perform repeated flights from a perch to a feeder in a four-meter tunnel. To test how the birds reacted to a variety of visual stimuli, the team projected patterns on the chamber’s front and side walls. Each flight was videoed.

In some scenarios, the researchers projected vertical stripes moving at various speeds on the side walls to mimic degrees of forward motion. Sometimes, horizontal stripes on the side mimicked changes in altitude. On the front wall, the researchers projected rotating swirls, designed to create the illusion of a change in position.

“If the birds were taking their cues directly from , we’d expect them to adjust their forward velocity to the speed of vertical stripes on the side walls,” says Dr. Baliga. “But while the birds did change velocity or stop altogether depending on the patterns, there wasn’t a neat correlation.”







University of British Columbia zoologists observed how hummingbirds reacted to a variety of visual stimuli using a four-meter flight tunnel. Credit: Roslyn Dakin

However, during flight, the hummingbirds did adjust more directly to stimuli indicating a change in altitude. And during hovering, the birds also worked to adjust their position much more closely to shifting spirals the research team projected on the front wall.

“Our experiments were designed to investigate how hummingbirds control flight speed,” says Dr. Doug Altshuler, senior author on the paper. “But because the took spontaneous breaks to hover during their flights, we uncovered these two distinct strategies to control different aspects of their trajectories.”

More information:
Vikram B. Baliga et al, Hummingbirds use distinct control strategies for forward and hovering flight, Proceedings of the Royal Society B: Biological Sciences (2024). DOI: 10.1098/rspb.2023.2155

Citation:
Need for speed: How hummingbirds switch mental gears in flight (2024, January 10)
retrieved 11 January 2024
from https://phys.org/news/2024-01-hummingbirds-mental-gears-flight.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.

% %item_read_more_button%% Hexbyte Glen Cove Educational Blog Repost With Backlinks — #metaverse #vr #ar #wordpress

Subscribe to our newsletter

Collect visitor’s submissions and store it directly in your Elementor account, or integrate your favorite marketing & CRM tools.

Do you want to boost your business today?

This is your chance to invite visitors to contact you. Tell them you’ll be happy to answer all their questions as soon as possible.

Learn how we helped 100 top brands gain success