Four or five days after pigeon eggs hatched, when the blood vessels on both sides of the embryo were symmetrical cobwebs, most of them were male pigeon fetuses; On the contrary, when the blood vessels on both sides of the embryo are asymmetric networks, most of them are female pigeon fetuses. Using this method to identify the sex of pigeons, the accuracy can reach about 80%.

Second, the method of male and female identification of young pigeons

1. Anal identification of young pigeons. When the young pigeon is 4-5 days old, gently open the anus of the young pigeon by hand. Seen from the side, the lower edge of male pigeon anus is short, and the upper edge covers the lower edge, slightly protruding. Seen from the back, the ends of the anus are slightly bent upward. The female pigeon is just the opposite, and the lower edge of the anus protrudes to the side, slightly covering the upper edge; Seen from the back, the ends of the anus tend to bend slightly downward. But after 5 days of age, feathers will grow near the anus, so it will be impossible to distinguish between men and women.

2. Comparative identification of appearance and behavior. Among the pigeons in the same nest, the male pigeon has a long and wide beak and a large and flat nose tumor; Put your hand in front of the squab, which is more sensitive; Pigeons leave the basin first, grow fast and weigh a lot. The female pigeon is the opposite.

3. Feeding identification method. Among the young pigeons in the same nest, most of the young pigeons eager to be fed by their parents are male pigeons.

Third, the male and female identification methods of pigeons

1, appearance identification method. The male pigeon has thick head, arched head, large and short mouth, large and prominent nose tumor, strong resistance, fast opening and closing speed of eyes and face, shiny feathers and sharp ends of its main wing. The female pigeon has compact body structure, round head, flat top, long and narrow mouth, thin and soft neck and gentle temperament.

2. Touch recognition method. The neck bone of the male pigeon is thick and hard, the keel process is long and hard, the distance between the end of the keel and the pubic bone is narrow, the distance between the two pubic bones is narrow and tight, and the tibia of the foot is thick and round. When the pigeon is picked up, it has a strong struggle. When the pigeon beak is pulled horizontally with fingers, its tail feathers droop. The neck bone of the female pigeon is thin and soft, the keel process is slightly short, and the distance between the two pubic bones is wide, about 4-5 cm; When catching pigeons, the resistance is weak, and when pulling the beak horizontally with your fingers, the tail feathers become much warped.

3. Anal identification method. For pigeons over three or four months old, the male pigeon's anus protrudes outward when it is closed, and it is hexagonal when it is opened; The female pigeon's anus is concave inward when it is closed and flower-shaped when it is opened.

Fourth, the male and female identification methods of adult pigeons

The above methods for identifying the male and female of young pigeons are all applicable to adult pigeons, especially in adult pigeons. But there are several differences: first, there is obvious estrus performance. Male pigeons often chase female pigeons and circle around them. At this time, the balloon at the neck of the male pigeon expands, the neck feathers and back feathers bulge, and the tail feathers unfold like fans and are dragged on the ground from time to time. The head moves frequently and makes a "goo goo" cry. Secondly, due to the mating between male and female, the tail feathers of male pigeons are dirty and the back feathers of female pigeons are dirty. Third, when kissing, the male pigeon opens his mouth and the female pigeon puts her beak into the male pigeon's mouth. After the kiss, the mother pigeon always naturally squats down and accepts the mating of the male pigeon. Fourth, the incubation time is different. Generally, the time for male pigeons to hatch eggs every day is 10- 16, and other times are hatched by female pigeons.