R766 (Michaelmas Cay) NE of Cairns is a bird breeding site. Controlling authority is Great Barrier Reef Marine Park Authority. Cairns Approach have approval to clear the Rescue helicopter into it for SAR or Medical flights.
Some years ago, RAAF Hawk jets doing training flights flight planned quite close to R766. Pilots were warned about it, but some still managed to fly through it. Don't think the birds would have liked them much.