Nine of 350 house sparrows caught in Reed City, Michigan, had malaria parasites detectable on Giemsa-stained thin films. All of the infected birds were juveniles, Parasitemias were too low to permit identification of the Plasmodium present. Collection of potential vector mosquitoes showed that Culex pipiens and Culex restuans were present, but in low numbers.
Gogolin, Luanne R. and Freier, Jerome E.
"Avian Malaria Among House Sparrows: a Survey of Disease and Mosquito Vectors (Diptera: Culicidae) in Reed City, Michigan,"
The Great Lakes Entomologist: Vol. 19
, Article 7.
Available at: https://scholar.valpo.edu/tgle/vol19/iss1/7