
Community identification
Bird Mite
Ornithonyssus sylviarum / Dermanyssus gallinae
- Order & Family
- Order: Mesostigmata; Family: Macronyssidae or Dermanyssidae
- Size
- 0.5 to 1.0 mm (nearly invisible to the naked eye without magnification)
Natural Habitat
Found in bird nests (pigeons, starlings, sparrows) and poultry houses; often enters homes through windows or vents after birds leave the nest.
Diet & Feeding
Obligate hematophages; they feed on the blood of birds, but will bite humans and other mammals if their primary host is unavailable.
Behavior Patterns
Highly mobile and active at night; they have a rapid life cycle (approx. 7 days) and can survive for several weeks without a host.
Risks & Benefits
They do not live or reproduce on humans, but their bites cause intense itching, skin irritation, and dermatitis; they are considered a household nuisance and a veterinary pest.