In ancient Greece, pigeons were utilized to transmit Olympic game results and deliver messages in wartime. Recently, in British Columbia, these birds were even involved in smuggling drugs into prisons. However, in Vancouver, researchers have embarked on a new initiative involving pigeons – assisting in the development of more intelligent drones.
A study led by the University of British Columbia, detailed in Current Biology, outfitted homing pigeons with small backpacks containing a miniature computer and head-mounted cameras to monitor their eye movements during flight. The entire system weighed approximately 27 grams, incorporating a credit card-sized computer, a modified commercial camera, and sensors tracking the birds’ movements and orientation.
Anthony Lapsansky, the lead researcher, shared the challenges faced in equipping the pigeons with the gear, requiring meticulous practice and experimentation. By gradually introducing the equipment, starting with dummy backpacks to acclimate the birds, they eventually succeeded in the process.
The research involved a group of around 16 pigeons released on a familiar route, allowing them to return home naturally, enabling the retrieval of recorded flight footage. The study revealed that pigeons exhibit slow, subtle eye movements during flight to potentially enhance their environmental awareness.
Contrary to the belief that pigeons maintain fixed eyes while flying, the research indicated that they actively move their eyes for increased scene resolution. Additionally, findings suggested that pigeons adjust their eye position while landing, similar to how humans process depth information.
The study’s results challenge the traditional understanding of pigeon vision during flight. Another recent study, however, suggested that pigeons generally maintain fixed eyes during flight, differing from the UBC study’s findings due to varying flight conditions and distances covered.
The potential implications of these discoveries extend to drone technology, with the prospect of incorporating movable cameras inspired by pigeon vision. Engineers could enhance drone capabilities by adapting to the birds’ visual strategies for improved navigation and information gathering.