Bird Mite (specifically, likely Dermanyssus gallinae or Ornithonyssus sylviarum)
Scientific Name: Dermanyssus gallinae (Chicken Mite) or Ornithonyssus sylviarum (Northern Fowl Mite)
Order & Family: Order: Mesostigmata; Family: Dermanyssidae or Macronyssidae
Size: Very small; approximately 0.5 mm to 1 mm in length.
Natural Habitat
Typically found in bird nests (pigeons, sparrows, starlings, poultry), cracks and crevices near roosting areas. They often migrate into homes when host birds leave a nest.
Diet & Feeding
Hematophagous (blood-feeders). They feed primarily on the blood of birds but will bite mammals (including humans) if their primary host source is gone.
Behavior Patterns
Nocturnal feeding is common for chicken mites, while northern fowl mites stay on the host. They are known for rapid movement and swarming behavior when a nest is disturbed or abandoned. They are often seen as tiny moving specks on walls, windowsills, or bedding.
Risks & Benefits
Risks: Their bites cause intense itching, irritation, and rashes (dermatitis) in humans, sometimes described as a 'crawling' sensation. While they are not major vectors for human diseases, they are significant pests for poultry. Benefit: None to humans or domestic settings.
Identified on: 3/1/2026