1. How to describe the appearance characteristics of a rooster.

2. The appearance characteristics and life characteristics of chickens.

3. The appearance characteristics of chicken.

4. Composition on the appearance and characteristics of chicken.

1. Chicken head: The crest is a skin derivative located on the top of the head and is an epithelial structure rich in blood vessels.

2. Different varieties have different crown shapes.

3. Even with the same crown shape, there are differences in different varieties.

4. There are many types of cockscombs, which are an important characteristic of the breed. They can be divided into single combs, bean combs, rose combs, strawberry combs, feather combs, etc.

5. Chicken neck: The length of the neck is different due to different breeds. The chicken neck is composed of 13 to 14 cervical vertebrae.

6. The necks of egg-type chickens are slender, while the necks of meat-type chickens are thicker and shorter.

7. The body of a chicken: It consists of three parts: the chest, abdomen, and tail, which are closely related to gender, production performance, and health status.

8. The chest is where the heart and lungs are located. It should be wide, deep, and well-developed, which not only indicates a strong physique, such as a broiler, but also indicates well-developed chest muscles.

9. Chicken limbs: Birds adapt to flying, and their forelimbs develop into wings, also called wings.

10. The state of the wings can reflect the health of the bird.

11. Normal chicken wings should be tightly attached to the body. Drooping is a sign of weakness.

12. The bones of the hind limbs of birds are long. The femur is wrapped in the human body. The tibia is well muscled and its shape is called the thigh. The foot bones are slender and its shape is often called the tibia.