
Community identification
Bird Mite
Ornithonyssus sylviarum
- Order & Family
- Order Mesostigmata; Family Macronyssidae
- Size
- 0.5 mm to 1.0 mm (barely visible to the naked eye)
Natural Habitat
Typically found in bird nests (sparrows, starlings, pigeons) or poultry houses; they may enter homes when birds leave the nest.
Diet & Feeding
Parasitic blood-feeders. They primarily feed on the blood of birds but will bite humans and other mammals if their primary host is unavailable.
Behavior Patterns
They are highly mobile and phototactic. They complete their life cycle quickly (often within 7 days) and tend to leave nests in large numbers once the fledgling birds fly away.
Risks & Benefits
Risks include intense itching, skin irritation, and red welts (dermatitis) in humans. They do not generally transmit diseases to humans but can cause significant stress/anemia in poultry. No major ecosystem benefits.