Wildlife officials are investigating a mysterious mass bird death in Hillsboro.
Dozens of red-winged blackbirds and European starlings were found dead in a field off West Union Road, along with a bald eagle and a red-tailed hawk. There were no obvious signs of death. The birds are being tested by wildlife officials to figure out how they died.
It is unusual and concerning for this many birds to die at once and for there to be several species involved, according to Bob Sallinger, conservation director for the Audubon Society of Portland.
