What are the characteristics of pigeon eyes?

From the size of pigeon pupil, the characteristics of pigeon racing are as follows: pigeons have large pupil and are afraid of strong light; Pupils are small, so it is difficult to see clearly when it is dark. When the pupils of homing pigeons can't adapt to the climate, they will soon get tired and directly affect their brains. Once the brain is affected, it will affect the whole body. Therefore, the weather has a very important relationship with the pupil. Therefore, when choosing homing pigeons, it is better to choose the ones with moderate pupils on the premise of satisfying eye position and other conditions.