Reasons for the Thrush's fall:

1. Environmental changes. Due to changes in the environment, birds enter a strange environment and feel fearful. They also become reactive because they are not familiar with the new environment.

2. Improper management. Because of improper management by bird keepers, the birds are fearful, such as catching them with their hands, or being frightened by cats, dogs, or children at home.

3. Seasonal changes. When the weather is cold, the sex organs of birds atrophy, gonadal function declines, and the secretion of sex hormones decreases, so birds will sing less.

4. Physical weakness. Due to molting, illness and other reasons, the thrush sings less. At this time, the thrush is weak.

5. Nutritional deficiencies. The feed that the birds eat is not nutritious enough, causing the birds to become weak and unable to maintain normal body functions.

6. Excessive consumption. Excessive chirping or fighting can damage the vitality of the bird, causing the bird to consume too much and be affected.