Bird Mite or Rodent Mite
Scientific Name: Ornithonyssus / Liponyssoides species
Order & Family: Order: Mesostigmata; Family: Macronyssidae
Size: 0.5 mm to 1 mm (extremely small, barely visible to the naked eye)

Natural Habitat
Typically found in bird nests (pigeons, starlings, sparrows) or rodent burrows; they often enter human structures when the primary host leaves the nest.
Diet & Feeding
Hermophagic; they feed primarily on the blood of birds or rodents, but will bite humans if their primary host is unavailable.
Behavior Patterns
They are highly mobile, active explorers that search for new hosts when nests are abandoned. They are often most active at night or in high humidity conditions.
Risks & Benefits
While they cannot survive or reproduce on human blood, their bites cause intense itching, redness, and irritation (dermatitis). They do not typically transmit diseases to humans but represent a significant nuisance pest.
Identified on: 5/26/2026