The pigeon is a "monogamy" system. Identification of male and female pigeons can be used to identify the males and females to improve their production performance. The specific identification methods are as follows: Coops have a relatively thick body, short necks, rounded heads, nearly square bulges on the top of the head, and large and wide nares; Smaller, slender neck, narrow top of the head, small and narrow nasal tumors. In the 6-week-old pigeons, the white lines in the central part of the nose tumors were mostly hens, while the cocks were not. Two of the same litters were cocker pigeons with wide eyes and large bodies in both eyes. The cocks have a short mouth and a long keel; the hens have a long mouth and the keel is short. The cocks that started to develop (about a few months) often chase the hens, and from time to time the tail feathers are fanned out, daggers are high in their chests, and they are majestic. The cocks often chase the hens and issue a buzz. In general, the cocks are more lively than the hens, and the fight is good. The eyes are shining. The pigeons were strong and the chest swelled like a ball; the quails were short and small, and there was no abnormality in the chest. When the pigeons were caught, it was felt that the cocks were more resistant and the hen was weak. The young pigeons that are not yet in the nest are often more ferocious than the hens. They are hand-stretched in front of the young pigeons. The pigeons are immediately feathered and their mouths are buzzing and buzzing. The hens are showing resistance. But more moderate. Fertilized pigeon eggs hatched to distinguish sex, fertilized pigeon eggs hatched 4 days later, put the lights to observe the embryonic development, such as seeing the embryonic base axis on both sides of the blood capillary symmetry, the emergence of many spider silk-like male embryos; see it The filaments on both sides of the embryonic basal axis appear to be asymmetrical, with long filaments, short and thin filaments, and mostly female embryos. Most of the eggs hatched by the hens are from 5 o'clock in the afternoon to 5 o'clock the next day; the common pigeons are mostly from 8 o'clock in the morning to 2 o'clock in the afternoon. China Agricultural Network Editor
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