Delaware officials are asking residents to report any sick birds in their efforts to track the West Nile virus.
The Division of Fish and Wildlife said that finding such birds that may have died of the virus will help find areas where the mosquito-borne virus has been.
WBOC reports that species to watch range from crows, blue jays and cardinals to robins, hawks and owls among others.
In addition, authorities are considering imposing penalties on residents who leave standing water where mosquitos breed.
