The mosquitoes that carry West Nile Virus to humans may be getting it more often from robins than from crows.

A DNA analysis of blood taken from the abdomens of 300 mosquitoes trapped in Connecticut over the past three years found that 40 percent fed on the blood of the red-breasted songbird and only 1 percent on crows, said Theodore Andreadis, chief medical entomologist at the Connecticut Agricultural Experiment Station.

Andreadis said the next step in research would be to catch robins in special mist nets and test their blood. The nonlethal tests would tell researchers if the birds are an effective reservoir for the disease.