Federal officials arrested the killers of two rare whooping crane in Kentucky . The birds are thought to have been shot in the same incident in Tennessee . A reward is offered for information leading to those responsible for the crime . Whooping crane are the most endangered of all of the world 's crane species .
Wildlife officials seek the killers of two rare whooping cranes in Kentucky . The birds are thought to have been shot in the same incident in November . A reward is offered for information leading to those responsible for the crime . Whooping cranes are the most endangered of all of the world 's crane species .