In ancient times, pigeons were utilized for diverse tasks, such as delivering messages during wars and smuggling drugs into prisons. Recently, researchers in Vancouver have engaged pigeons in a new project: assisting in the design of more intelligent drones.
A study led by the University of British Columbia, 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 entire setup weighed approximately 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, mentioned the meticulous process involved in outfitting the pigeons with the equipment, which required sewing different sizes of falconry hoods to secure the camera and creating tiny backpacks for the remaining gear. The pigeons were gradually accustomed to the equipment by initially wearing fake backpacks to prevent panic.
The researchers worked with a group of around 16 pigeons released along a familiar route, allowing them to return to their loft, where the equipment was removed, and the recorded footage was collected.
The study revealed that pigeons make subtle eye movements during flight, potentially enhancing their visual perception. They also observed the birds aligning both eyes inward while landing on a perch, indicating a depth perception mechanism similar to humans.
Contrary to the traditional belief that birds keep their eyes fixed during flight, the research challenged this notion. Another recent study, however, suggested that pigeons tend to stabilize their gaze in flight, depending on factors like altitude and surroundings.
The findings could have implications for drone technology, as birds’ dynamic vision strategies could inspire the development of drones with movable cameras for enhanced environmental awareness. Engineers may consider implementing similar techniques in autonomous drones to improve their functionality and adaptability.
Overall, the study sheds light on the sophisticated visual capabilities of pigeons and their potential contribution to advancing drone design and navigation systems.