In ancient times, pigeons were utilized for various tasks such as delivering messages during wartime and smuggling drugs into prisons. Now, researchers in Vancouver have assigned pigeons a new role in designing advanced drones.
A study led by the University of British Columbia and published in Current Biology involved equipping homing pigeons with miniature backpacks containing a small computer and head-mounted cameras to monitor their eye movements during flight. The setup weighed around 27 grams and included a compact computer, a modified commercial camera, and sensors to track the birds’ movements and orientation.
Anthony Lapsansky, the lead researcher who conducted the study at UBC, mentioned the meticulous process of fitting the equipment onto the pigeons, which required crafting falconry hoods to secure the cameras and backpacks. The pigeons were gradually accustomed to the gear through the use of dummy backpacks before the actual equipment was attached.
The research team worked with a group of approximately 16 pigeons released along a known flight path. As homing pigeons, they returned to their loft after the flight, allowing researchers to retrieve the recorded footage.
The study revealed that pigeons exhibit slow, subtle eye movements during flight, suggesting a mechanism for gathering detailed information about their surroundings. Contrary to common belief that pigeons keep their eyes fixed while flying, the research demonstrated that they actively move their eyes to potentially enhance their visual perception.
Another recent study published in the same journal proposed that pigeons tend to stabilize their eyes during flight. However, the UBC study differed by observing pigeons flying higher and farther, indicating potential variations in eye movement strategies based on flight conditions.
The findings challenge existing assumptions about avian eye movements and offer insights into potential applications for drone technology. Lapsansky emphasized the potential benefits of incorporating adaptable cameras on drones to mimic the dynamic vision of birds for enhanced navigation and information gathering.
In conclusion, the study sheds light on the intricate eye movements of pigeons during flight and suggests implications for improving drone technology through bio-inspired design.