Assistant State Veterinarian Dr. Brandon Doss examines dead red-winged blackbirds at the Arkansas Livestock and Poultry Commission Diagnostic Laboratory in Little Rock, Ark., Monday, Jan. 3, 2011. Scientists are investigating whether bad weather, fireworks or poison might have forced more than 3,000 red-winged blackbirds out of the sky, or if a disoriented bird simply led the flock into the ground. (AP Photo/Danny Johnston)
January 5, 2011 7:56:06 AM PST
STOCKHOLM - January 5, 2011 --
Officials say about 50 birds have been found dead on a street in Sweden.