Bug Identifier
Bird Mite
Community identification

Bird Mite

Dermanyssus gallinae or Ornithonyssus sylviarum

Order & Family
Order: Mesostigmata; Family: Dermanyssidae or Macronyssidae
Size
0.5 mm to 1.0 mm (extremely small, barely visible to the naked eye).
See this bug in the Encyclopedia

Natural Habitat

Found in bird nests, poultry houses, and occasionally inside homes near nesting sites (e.g., windowsills, vents, attics).

Diet & Feeding

Obligate blood-feeders. They primarily feed on the blood of birds but will bite humans if their bird hosts are unavailable.

Behavior Patterns

Nymphs and adults are active mostly at night. They can survive for several weeks without a host and often disperse in large numbers after birds leave a nest.

Risks & Benefits

Risks: Their bites can cause severe itching, skin irritation, and dermatitis in humans. They do not live or reproduce on humans. Benefits: None to humans; they are considered household pests and agricultural parasites.