MONROE - A dead crow found in Green County on Sept. 7 has tested positive for West Nile virus, according to the Green County Health Department. This is the first bird that tested positive for West Nile virus in Green County since surveillance for the mosquito-transmitted virus began May 1. "The positive bird means that residents of Green County need to be vigilant in their personal protective measures to prevent mosquito bites," said RoAnn Warden, public health director.