MASCOUTAH, Ill. (AP) - Thousands of birds were found dead in a farm field, and officials suspect a chemical may have killed them. State Department of Natural Resources biologists are running tests on some of the birds and should have the results Tuesday, department spokesman Joe Khayyat said Monday. The bodies of about 2,000 red-winged blackbirds, starlings and grackles were found late last week in a farm field with their wings to the side and heads pointing into the ground. Biologists at first suspected that a violent downdraft killed the birds by slamming them into the ground. But Khayyat said new evidence points to possible chemical contamination. Wind had been blamed in an earlier incident this summer, when a flock of egrets was found dead near Springfield after a strong storm.