Bug Identifier
Bird Mite
Community identification

Bird Mite

Ornithonyssus sylviarum

Order & Family
Order: Mesostigmata; Family: Macronyssidae
Size
0.5 mm to 1 mm (extremely small, barely visible to the naked eye)
See this bug in the Encyclopedia

Natural Habitat

Commonly found in bird nests, poultry houses, and inside homes near bird nesting sites like eaves or chimneys.

Diet & Feeding

Nymphs and adults feed on the blood of various bird species; they may bite humans if their bird hosts are unavailable.

Behavior Patterns

They are highly active crawlers that leave nests once young birds fledge. They are semi-transparent when hungry and turn reddish-brown after feeding.

Risks & Benefits

Can cause severe itching and skin irritation (dermatitis) in humans, though they cannot survive or reproduce on human blood alone. They are significant pests in the poultry industry.