Bird Mite
Scientific Name: Ornithonyssus sylviarum
Order & Family: Order: Mesostigmata, Family: Macronyssidae
Size: 0.5 to 1.0 mm (extremely small, often appearing as tiny moving specks)

Natural Habitat
Found in bird nests, on poultry, or inside buildings near abandoned or active bird nests.
Diet & Feeding
Hematophagous (blood-feeding) on birds, primarily domestic fowl and wild birds; they may bite humans if their bird hosts are unavailable.
Behavior Patterns
They are active year-round and can complete their life cycle in 5–12 days. They are highly mobile and will migrate into living spaces once their primary avian host has left the nest.
Risks & Benefits
Can cause intensely itchy bites and dermatitis in humans; however, they cannot survive or reproduce on human blood alone. They are significant pests in the poultry industry.
Identified on: 5/22/2026