Louse fly or Ked

Found on warm-blooded hosts such as birds and mammals, often moving into nearby environments if a host is absent.

Obligate hematophagous, feeding exclusively on the blood of their vertebrate hosts.

Many species lose their wings after finding a host and spend their entire lives clinging to fur or feathers; some species are fully winged and capable of flight.

Can deliver painful bites to humans and animals, and may transmit certain pathogens to livestock or wildlife, though they generally prefer non-human hosts.