LABARRE — Hundreds of dead and dying birds littered a quarter-mile stretch of highway in Pointe Coupee Parish on Monday as motorists drove over and around them. State biologists are trying to determine what led to the deaths of the estimated 500 red-winged blackbirds and starlings on La. 1 just down the road from Pointe Coupee Central High School. The discovery of the dead birds — some of which were lying face down, clumped in groups, while others were face up with their wings outstretched and rigid legs pointing upward — comes just three days after more than 3,000 blackbirds...