Federal authorities are offering a $10,000 reward for any information about the deaths of 13 iconic bald eagles who were found dead on a Maryland farm on Saturday. It was the largest single die-off the birds in Maryland in 30 years. The eagles were found by the Maryland Natural Resources Police, which said the cause of death is unknown but that the birds may have been victims of poisoning. "What happens is that when farms have rodent problems, landowners will put out poison to control it, and the eagles will eat the poisoned animals," said spokeswoman Candy Thomson. The investigation has been handed over to the U.S. Fish and Wildlife Service, which is offering the reward. — Read it at NBC News