Which statement about Newcastle Disease symptoms in birds is true?

• A. Respiratory distress, greenish watery diarrhea, muscle tremors, drooping of the wings, and twisting of the head and neck
• B. Skin lesions
• C. Hair loss
• D. Increased appetite

Answer: (A)

Newcastle disease in birds often presents with a mix of respiratory symptoms and nervous system signs, especially when the virus is more virulent. Birds can show breathing difficulties, coughing, sneezing, and other respiratory distress, often accompanied by nasal or ocular discharge. In more severe cases, there can be digestive upset with greenish watery diarrhea. Neurological involvement is also common in virulent forms, leading to tremors, weakness, drooping of the wings, and twisting of the head and neck (torticollis). This combination of respiratory trouble, diarrhea, and nervous signs is characteristic of Newcastle disease, making the statement describing all of these features true.

Skin lesions and hair loss aren’t typical signs of Newcastle disease, and a markedly increased appetite is not consistent with illness from this virus. Sick birds usually reduce food intake and become lethargic.