Describe the shape of a rooster.

The cock's mouth is very sharp, as sharp as the eagle's mouth;

2. Its eyes are round and black, as bright as black pearls;

Behind the eyes are its ears, which are covered with fluff. No matter how windy and rainy it is, a grain of sand and a drop of water can't get in;

4. It has a fiery red comb on its head, which looks like it is wearing a little red riding hood.

5. There is a semicircular piece of meat under its mouth, which is its chicken pendant; Its neck is shiny and colorful, so cute;

6. Its wings spread like two feather fans; Its tail is tilted high, like a colorful golden rainbow;

7. It's fun to walk by swinging your tail up and down.

8. It has a pair of golden claws, which are long, hard and sharp, and can dig a hole in a short time.

I. Basic concepts

Cocks and poultry have many varieties, short wings and can't fly high; Crows can announce the dawn.

The rooster is the national bird of France? The reason is that it is brave, tenacious and aggressive.

Two. introduce

1. The rooster is the head of the chicken and plays the role of leading the flock and sowing seeds. Some cocks are fierce and will attack other animals or humans.

2. When mating, the rooster rides on the hen's back and fertilizes with anus.

Although the eggs laid by a refined hen can hatch chicks, it doesn't mean that eggs are the crystallization of both, and hens who have never been pregnant will also lay eggs.

Three. genital system

1. The reproductive system of China roosters is different from that of viviparous mammals. The testis and epididymis of rooster are in abdominal cavity, the mating organ is a degenerate reproductive process, and the sperm head is a long cone.

2. Hens can ovulate every 25 hours or so, and only the left ovary and fallopian tube develop. After the fertilized eggs are discharged from the hen, if they fail to reach the critical hatching degree (24℃), they will stop developing.

3. The reproductive system of rooster consists of testis, epididymis, vas deferens and copulator. What artificial insemination personnel need to know most is the structure of rooster mating organs.

The cock doesn't have a penis like a mammal, but it has a mating organ consisting of nipple, glandular duct, penis and lymph nodes. The copulatory organ is located on the ventral side of cloaca, and it is always hidden in cloaca.