Bird Mite
Scientific Name: Ornithonyssus sylviarum or Dermanyssus gallinae
Order & Family: Order: Mesostigmata; Family: Macronyssidae or Dermanyssidae
Size: 0.4 mm to 1.0 mm (extremely small, often appearing as tiny moving specks).
Natural Habitat
Nests of wild birds (such as pigeons, starlings, or sparrows), poultry houses, and occasionally indoor residences when hosts leave the nest.
Diet & Feeding
Blood of avian hosts; they will bite humans and other mammals if their primary bird host is unavailable, though they cannot survive long-term on human blood.
Behavior Patterns
They are semi-transparent but turn reddish or dark brown after feeding. They are highly active and exhibit a 'crawling dot' behavior on surfaces like walls, ceilings, or digital screens.
Risks & Benefits
Risks include intense itching, skin irritation, and dermatitis from bites in humans. They do not transmit diseases to humans but cause significant psychological distress and physical discomfort. No ecological benefits to humans.
Identified on: 1/10/2026