Thirteen bald eagles were found dead in Maryland this weekend in what officials are calling off the largest single die-off of bald eagles in 30 years. The mysterious deaths were spotted near a farm on Maryland’s Eastern Shore by a man at 2:30pm on Saturday who was out looking for deer antlers. Washingtonpost.com reports: It was not immediately clear what had caused the birds to die, but there were “no obvious signs of trauma with these birds,” according to Candy Thomson, a natural resources police spokeswoman. “A working theory is poisoning,” Thomson said Monday night. She added that someone may have sprayed a new chemical on a field that adversely affected the birds. Or someone may have used poison to kill rodents; if the rodents died outdoors and the eagles consumed their carcasses, the birds could get sick too. “We just don’t know right now, which is why we’re asking the public if they heard anything, if they saw anything, we want to know about it,” Thomson said. A reward of $2,500 is being offered for information in the case. The discovery of 13 dead bald eagles was the largest single incident in decades for the state, officials said. At [...]