Bird Mite
Scientific Name: Ornithonyssus sylviarum
Order & Family: Order: Mesostigmata, Family: Macronyssidae
Size: 0.5 mm to 1 mm

Natural Habitat
Found in bird nests (sparrows, starlings, pigeons) or in homes near nesting sites after birds leave.
Diet & Feeding
Obligate blood-feeders, primarily feeding on the blood of wild and domestic birds.
Behavior Patterns
Active year-round but peak in late spring/early summer; they are highly mobile and can crawl long distances into homes searching for a host.
Risks & Benefits
They do not live on humans but can bite, causing intense itching and red bumps; they are nuisances and pests with no ecological benefits to humans.
Identified on: 1/15/2026