Seven tiny, fragile wing-bones discovered at a prehistoric site in northern Israel turn out to have been perforated. They may have served as whistles imitating the calls of predatory birds, Israeli archaeologists reported Friday in Nature Scientific Reports...One of the flutes was discovered complete, the team says.They could have been imitating bird calls in order to attract them, as duck hunters do to this day...Eynan is associated with a Late Stone Age culture, the Natufians, pre-agricultural groups living in Israel and the surrounding region from 15,000 to about 11,700 years ago. They were hunter-gatherers but were among the earliest people...