Which of the following is an external parasite found in poultry?

The presence of chicken lice as an external parasite in poultry is well-established in poultry management. Chicken lice are ectoparasites that live on the feathers and skin of birds, where they feed on their blood and skin debris. This feeding can lead to irritation, feather damage, and even anemia in severe cases. Recognizing the significance of maintaining a clean and healthy environment for poultry, controlling lice populations is essential for the overall health of the flock.

In contrast, hookworms and roundworms are internal parasites that reside within the gastrointestinal tract of birds, affecting digestion and nutrient absorption. These parasites present different management challenges compared to external parasites like lice. The liver fluke, also an internal parasite, primarily targets the liver and is commonly associated with other livestock rather than poultry. Understanding these distinctions is crucial for effective poultry health management and appropriate treatment strategies.