Two conservation groups are renewing a lawsuit that accuses the Federal Communications Commission of contributing to millions of bird deaths.
The lawsuit says the FCC failed to comply with environmental laws when licensing cellular telephone, radio, television and other towers.
The two conservation groups say the federal government estimates up to 50 million birds die each year in the United States because birds confused by tower lighting crash into the structures, the guy wires, each other and the ground.
The groups said that it's a particular hazard along migration routes from Port Isabel, Texas, to Tampa Bay.
The Forest Conservation Council and the American Bird Conservancy sued in 2003, but a federal court ruled they had not given the FCC sufficient time to reply to a petition.
More than two years have gone by and the FCC still has not replied to the petition, so the suit has been refiled.