The pupil of the racing pigeon is a very important part of the racing pigeon's eyes. The pupil serves as a light gate for regulating light and has a great impact on the pigeon's adaptation to light. Generally speaking, pigeons with large pupils adapt to a more mixed environment. Pigeons with small pupils can adapt to the weather of the big sun. You can see that many sun birds have not very big pupils, or even smaller pupils. The pupils also have a certain ability to contract, some have a large contraction range, while others are very small.
Some pigeons have very small pupils when they are big in the sun, but if you put them in a dim place for a while, you can see that their pupils become big. Such pigeons tend to adapt to a variety of environments. Many pigeons have very small pupils and always maintain the same size. Such pigeons will not easily adapt to various different light conditions.
Pupils also have shapes, such as round, oval and irregular shapes. If the pupils of a pigeon are round, it is better to be smaller. If the pupils are round and large, they are generally easily lost during competitions. This kind of round pupil is very common, mainly some sun birds.
Many fanciers like the oval pupil. Some pigeon fans believe that this kind of pupil is -Jingxiang type pupil, which means that this kind of pupil pigeon is suitable for competition. It would be better if the oval could be tilted properly. Another type is irregular pupils. This kind of pupil is relatively rare. Generally, young pigeons are rarely seen. Some pigeons only have irregular pupils when they are four or five years old. This kind of pigeon is generally considered to have good breeding value.
