Bird Mite (or Tropical Rat Mite)
Scientific Name: Ornithonyssus spp. (likely O. sylviarum or O. bacoti)
Order & Family: Order: Mesostigmata, Family: Macronyssidae
Size: 0.5 to 1.0 mm (barely visible to the naked eye, often looking like moving specks)
Natural Habitat
Commonly found in bird nests (pigeons, starlings, sparrows) or rodent burrows; they often enter homes when their hosts abandon the nest.
Diet & Feeding
Blood from host animals; they will bite humans 'incidentally' but cannot survive or reproduce on human blood alone.
Behavior Patterns
They are external parasites that are most active at night or during the transition of seasons when bird hosts fledge. They crawl into dwellings through vents, windows, and wall cavities.
Risks & Benefits
Risks include intense itching, skin irritation, and dermatitis from bites. They do not typically transmit diseases to humans but cause significant psychological stress and physical discomfort.
Identified on: 7/1/2026