In 1988, pigeon fancier Chen Changyuan and I planned a scientific experiment on pigeon eyes to find photoreceptor cells from the iridescence to prove the effect of eye sand on pigeons' homing. He was a doctor, and he hired two famous chief physicians of the pathology department to spend two months doing physiological anatomy on the pigeon's eyes. No less than 10 homing pigeons were used and divided into two experimental groups. The pigeon eyes were frozen and then sliced. After magnifying 500-2000 times, the fine structures of the eye sand, eye signs and character circles were observed, and 36 color films were taken. The conclusion is very disappointing. The eyes are not photoreceptors, but are composed of nutrient blood vessels and pigment cells. The eyes and the character circle are two muscles, which are "incompatible" with the genetic performance of pigeons. Of course, the development of these nutritional blood vessels and muscles has a direct effect on the function of the pigeon's eyes. This experiment is an important achievement in the scientific research of homing pigeons in our country, but pigeon eye theorists do not give it a second thought, because according to them, "pigeon eye research is not limited by biology" and "Mendel's laws are not suitable for pigeons." Eye Research". In order to provide reference for pigeon fanciers, 8 of the selected photos were published in "Chinese Pigeon", and Chen Yuanchang wrote an article describing the process and conclusion of this experiment. I think pigeon eyes should be studied, and the research should be guided by scientific theories to draw scientific conclusions. It is also okay to "imagine boldly and verify carefully." But it is also necessary to "verify", but some pigeon fanciers have written large articles on pigeon eyes without doing scientific research. They only have "bold assumptions" and no "careful verification", which often misleads people. When young people see the article, they search for it and take the correct position. As a result, they end up running on the wrong path full of hope. In the pigeon world, the 1950s was the peak period for research on pigeon eyes. Later, Ro Fleming wrote a book "Applications of Pigeon Eyes", SoWoE Bishabo published a book "The Secret of Pigeon Eyes", etc., see The pigeon eye articles in our country were all published in the 1980s, and they all used statistical methods to verify their results, and soon fell into disuse. Before scientific discoveries are successful, they are often ridiculed as dreams. If you don't even dare to dream, how can you make scientific discoveries? We must support pigeon eye research, but do not believe in the conclusions of subjective imagination. References: Once a pigeon is obtained, everyone has different techniques for identifying pigeons, and each has its own reasons and is not uniform. I am no exception. I have my own method of identifying pigeons. I share it for everyone’s reference. I don’t mean to let others follow suit. If a person doesn't like to use his brain, listens to the wind and always follows others, he will always be a laggard. If readers can learn from and be inspired by the following and develop better and practical pigeon identification techniques, that is what this article hopes to achieve. 1. Standing posture (1) If the standing posture of a pigeon is obviously greater than 45 degrees, and it looks like it is standing upright, most of them are fast pigeons that can win high prizes in middle and short distance events; the body is standing horizontally. Most of them are long distance racing pigeons. (2) Viewed from the front of the pigeon, if the distance between the two wings of a pigeon is too wide, the curvature of the wings (excluding the feather bar part) is relatively flat; the lift obtained by the wings of such a shape is not enough, and it will not save effort when flying. It cannot fly for a long time and is only suitable for short-distance and easy-to-fly events. lt; 2 gt;, Hand feeling (1) Put your fingers on the pigeon's chest and abdomen immediately after you put your hands on it, and use your fingers to feel the speed of the pigeon's heartbeat frequency and the strength (size) of the heartbeat force. You will feel that the heartbeat frequency continues to be rapid and rapid. The best fast pigeons are those that move loudly and powerfully, and that can even feel the rapid blood flow in the blood vessels in the chest and abdomen. Those whose heartbeats can barely be felt in the consciousness, or are too weak, relatively slow and steady, are long-distance pigeons; those whose heartbeats have a high frequency and weak beat are medium- and short-distance pigeons with average abilities. Those with a steady heart rate but strong and powerful beats are excellent long-distance pigeons that are good at speed and endurance. To use this method to identify pigeons, it must be done as soon as you get started. After a few minutes, when the mentality of the pigeon being held has calmed down, you will feel that it is not accurate again. If your fingers are not sensitive enough initially, you can place your ears on the back of the pigeon to test the hearing. (2) Press the chest muscles of the held pigeon with your fingers. Among the three most basic feelings of "hard, moderate and soft", they belong to short (within 500km), medium (700km) and long (1000km) distances respectively. pigeon.(3) The carcass shape of pigeons is determined by the shape of the skeleton structure. The carcass shape that can adapt to various racing conditions is an equilateral triangle; a deep keel (feeling "high keel") or a shallow keel (feeling "low keel") ) carcasses are adapted to different types of special racing conditions. When the pigeon's physical fitness reaches its optimal level and the chest muscles are very plump and filled into a "strip" shape, the keel will feel "indented" and become the ideal "apple" shape that is very difficult to achieve. This type of shape is almost impossible to achieve with deep-keeled pigeons. However, all "pigeons" have their uses, and various types of bones and carcasses have their shortcomings and strengths. There is no fixed standard. Therefore, no matter what kind of bone and carcass pigeons I face, I treat them equally and do not regard them as shortcomings. The difference lies in the competition or place where they are used. (4) My requirements for the distance between the pubic bone and the keel are not too strict. I know from my experience and experience as a judge in more than ten national winning pigeon competitions that no matter what distance the high-ranking winning pigeon is, the distance between the pubic bone and the keel is not too strict. The spacing between keels can be long or short, and there is no rule to follow. Therefore, I don't care about this, but I care about whether it is "tucked up". As long as the pubic bone hangs down, that is, the end of the pubic bone crosses the extension line of the keel shape, it will be eliminated immediately; the pigeons bred from inbreeding are another matter. In fact, the length and arrangement of the distance between the pubic bone and the keel are innate, and the looseness (opening) and tightness (closing) of the pubic bone are determined by the quality of the body's constitution. Although some requirements for hand feel are based on experience and rules summarized from racing performance pigeons, they are not absolute. When selecting pigeons, you cannot kill them just because you are not satisfied with certain aspects. There is always a reason why a pigeon can fly very well. It doesn't matter if it has flaws. That's called "beauty with flaws"! Otherwise, many pigeons that should not be killed will be killed by mistake. People who often touch Hermann Beaverdam pigeons will feel that they are not "pigeons" if they touch other pigeons. But this does not mean that Beaverdam pigeons will definitely be able to fly better than all other people's pigeons? No one dares to say that! .