“ It is unlawful for any person to hunt, trap, capture, willfully disturb, or kill any bird of any kind whatever, or take the eggs of such birds within the limits of this reservation, except under such rules and regulations as may be prescribed by the Secretary of Agriculture. Warning is expressly given to all persons not to commit any of the acts herein enumerated and which are prohibited by law. This reservation to be known as Culebra Reservation. ”