Red-billed gull chicks (Chroicocephalus scopulinus), near Dunedin, South Island, New Zealand, Pacific

Red-billed gull (Chroicocephalus scopulinus) in gannet breeding colony at Cape Kidnappers, Napier, North Island, New Zealand, Pacific

Red-billed gull (Chroicocephalus scopulinus) feeding chick near Dunedin, South Island, New Zealand, Pacific

Red-billed gulls (Chroicocephalus scopulinus), breeding colony near Dunedin, Otago, South Island, New Zealand, Pacific

Red-billed gull (Chroicocephalus scopulinus) in flight near Dunedin, South Island, New Zealand, Pacific

Adult Dolphin Gull (Larus scorebii) on the wing in the Falkland Islands, South Atlantic Ocean

Adult Dolphin Gull (Larus scorebii) on rocky shoreline near Ushuaia, Argentina, South America

Adult Dolphin Gull (Larus scorebii) on rocky shoreline near Ushuaia, Argentina, South America