Last Updated on June 18, 2026 by Staff
Pigeons are a sight in cities around the world. Scientists have now found out something really interesting about how these birds fly. Researchers from Harvard University have discovered that pigeons keep their eyes completely still while they are flying through the air.
The researchers found this out by doing a study. They published their results in the journal Current Biology. This study gives us ideas about how birds process what they see and navigate while they are moving really fast. The study shows us a cool strategy that helps pigeons stay balanced, control their flight and get to where they are going safely.
Tracking Eye Movements
It is really hard to study how birds move their eyes when they are flying. To figure this out the research team made a device that could record what the pigeons eyes were doing while they were in flight.
The device had a camera, mirrors and a lens on a small headpiece that the pigeons wore. The pigeons also had a backpack with a battery to power the device. This special setup let the scientists watch what both of the pigeons’ eyes were doing at the time without bothering the birds.
Nine pigeons were part of the study. Three of the birds flew outside for 100 meters to get back to their home. The other six birds flew inside a hallway with different things to look at. This let the researchers see how the birds reacted to environments.
Eyes Stay Still
The results were really surprising. When the pigeons were flying their eyes did not move much at all. Looking around, the birds kept their eyes in almost the same position the whole time.
The researchers found out that the pigeon’s eyes stayed in the position within about one degree from one flight to another. This happened whether the birds were flying outside in an environment or inside with simple patterns and walls.
The study showed that the pigeons are actively keeping their eyes in this fixed position. They are not just keeping their eyes by accident. The birds seem to be making an effort to lock their eyes in place which makes their visual system really stable while they are flying.
Bigger Pupils
The researchers also found something about the pigeons pupils. When the birds were flying their pupils got bigger by 70 percent compared to when they were on the ground.
When the pupils are bigger more light can get into the eyes. The researchers think this helps the pigeons process what they see effectively while they are moving really fast. When birds are flying they need to react and make good decisions about how far away things are, how fast they are going and what is in their way.
By letting light into their eyes the pigeons can see more details. This probably helps them navigate environments and avoid crashing into things while they are flying.
Better Navigation
The researchers think that keeping the eyes in a position is really helpful. The way the eyes are aligned matches the way the pigeon’s balance system works inside their ears.
This connection probably helps the birds combine what they see with the balance signals. When the eyes are stable the brain gets a view of the world, which makes it easier to figure out which direction they are going, how fast they are going and how they are moving.
The scientists think this strategy helps the pigeons understand how they are moving through space. This information is really important for flying, navigating and staying stable when things are changing.
This discovery shows us how amazing birds are at flying. While people and many other animals move their eyes around to look at their surroundings, pigeons do things differently. By keeping their eyes and letting their brains process a stable visual scene they can fly really precisely. This research not only helps us understand pigeons better but it might also inspire new technologies, in aviation, robotics and navigation systems that need to detect motion and stay stable.