Sternostoma setifer is a mite that is parasitic in the nasal passages of some North American birds, including bluebirds and martins.
References
Further reading Knee, Wayne, Heather Proctor, and Terry Galloway. "Survey of nasal mites (Rhinonyssidae, Ereynetidae, and Turbinoptidae) associated with birds in Alberta and Manitoba, Canada." The Canadian Entomologist 140.03 (2008): 364–379.