On October 25, 2017 (September 6, 2017 in the lunar calendar), the first rare white red deer appeared in our country. "White deer" has been regarded as a kind of auspiciousness since ancient times. It is said that rare things are precious. Recently, ecological conservators photographed four wild red deer with snow-white bodies in Qinghai. It is understood that this should be the first time that wild white red deer individuals have been recorded in our country. Experts say that the reason why white deer are rare is that in addition to the need for genetic mutations, it is also easy to be discovered and captured by natural enemies because of the loss of protective color. According to reports, on the afternoon of October 25, 2017, Cai Rending Ding Zeng, an ecological conservator in Nangqian County, found these four white red deer while patrolling the mountains, which are particularly noticeable in the dark gray deer herd. It is reported that red deer have records of white type in North America and Europe, and some white type individuals are also raised in New Zealand, but wild ones are very rare. Previously, there has been no record in China. This discovery has high scientific and cultural value. Luo Shujin, a researcher at the School of Life Sciences at Peking University, said that the hair color of mammals is usually composed of two melanin, one of which can make the hair black, and the other melanin makes the hair brown and yellow. White red deer are the result of a mutation in the gene that controls melanin in their body. Natural selection, survival of the fittest. The main reason why white red deer are rare is that the probability of genetic mutation itself is very low, and if it produces mutations that are not conducive to the survival of organisms, it is easy to be eliminated by natural selection.