Bug Identifier
Bird Mite
Community identification

Bird Mite

Ornithonyssus sylviarum/Dermanyssus gallinae

Order & Family
Order: Mesostigmata; Family: Macronyssidae/Dermanyssidae
Size
Minute, approximately 0.5 to 1.0 mm (hardly visible to the naked eye without movement).
See this bug in the Encyclopedia

Natural Habitat

Found in bird nests (pigeons, starlings, sparrows) and poultry houses; they may enter homes through vents or windows if a nest is nearby.

Diet & Feeding

Obligate blood-feeders, primarily targeting birds but will bite humans and other mammals if their primary host is unavailable.

Behavior Patterns

Highly active and mobile; they often migrate indoors in large numbers after young birds leave a nest. They are most active at night.

Risks & Benefits

Risks include intense itching, skin irritation, and dermatitis in humans from bites. While they cannot survive long or reproduce on human blood, they are significant nuisance pests. They offer no ecological benefits in human environments.