Bird Mite

Scientific Name: Ornithonyssus sylviarum

Order & Family: Order: Mesostigmata, Family: Macronyssidae

Size: 0.5 mm to 1 mm

Bird Mite

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