Why chicken wont walk anymore stand up it lays in front of the feeding dish?

List of possible causes

* Newcastle Disease:

- A viral disease that can affect chickens of all ages. Symptoms include respiratory distress, coughing, sneezing, and diarrhea. In severe cases, chickens may become paralyzed and die.

* Marek's Disease:

- A viral disease that causes tumors in chickens. Symptoms include weight loss, depression, lameness, and paralysis.

* Fowl Pox:

- A viral disease that causes raised, wart-like lesions on the skin of chickens. Lesions can occur on the head, neck, wings, and legs. In severe cases, chickens may become blind or lame.

* Bumblefoot:

- An infection of the foot pad of chickens. Symptoms include swelling, redness, and pain. Chickens with bumblefoot may have difficulty walking or standing.

* Leg Injuries:

- Chickens can suffer from injuries to their legs, such as fractures, sprains, and dislocations. These injuries can make it difficult for chickens to walk or stand.

* Nutritional Deficiencies:

- Deficiencies in certain nutrients, such as calcium, phosphorus, and vitamin D, can lead to weak bones and muscles. This can make it difficult for chickens to walk or stand.

* Obesity:

- Obese chickens may have difficulty walking or standing due to the extra weight they are carrying.

* Stress:

- Stressful conditions, such as overcrowding, poor ventilation, and extreme temperatures, can lead to a variety of health problems in chickens, including difficulty walking or standing.