Macronyssidae
Guides
Ornithonyssus sylviarum
Northern Fowl Mite
Ornithonyssus sylviarum, commonly known as the northern fowl mite, is a blood-feeding ectoparasite of birds that has become a major economic pest of poultry worldwide. The entire life cycle occurs on the host, allowing populations to expand rapidly under favorable conditions. Heavy infestations cause anemia, reduced egg production, and can lead to death in severe cases. The mite has been reported on over 72 host species across 26 bird families and has shown ability to infest mammalian hosts including humans, though it does not permanently establish on non-avian hosts.