Bird louse fly

The bird louse fly (Ornithomya avicularia) is a highly specialized ectoparasite belonging to the order Diptera and the family Hippoboscidae. In agricultural environments, this insect is considered a significant pest that affects the welfare and productivity of domestic poultry flocks.

This parasite feeds on the blood of various avian species, commonly infesting chickens, ducks, and geese. Its presence within poultry houses can lead to severe infestations, especially in poorly ventilated environments or facilities with inadequate sanitation practices.

The biological development of Ornithomya avicularia is unique, as they are pupiparous. The female produces a single, fully developed larva that pupates immediately in the litter, nesting materials, or cracks of the poultry house. This cycle allows for rapid population growth if left unchecked.

The damage caused by these flies involves constant blood-feeding and irritation of the host’s skin. Infested birds exhibit signs of stress, anemia, damaged plumage, and a significant drop in egg production or weight gain, which negatively impacts the economic performance of a farm.

• Maintain strict hygiene standards in poultry houses.
• Remove and safely dispose of old bedding and nest material.
• Use approved topical insecticides for birds and premises.
• Implement regular monitoring of flock behavior and feather condition.

Effective management requires a combination of chemical control and environmental management. By treating the habitat of the pupae and applying veterinarian-approved insecticides to the birds, producers can successfully break the parasite's life cycle and protect their flocks.