The Gull-billed TernGelochelidon nilotica is a seabird of the tern family Sternidae. It is now considered to be in its own genus. All forms show a post-breeding dispersal, but the northern breeders are most migratory, wintering south to Africa, the Caribbean and northern South America, southern Asia and New Zealand. This is a fairly large and powerful tern, with a short thick gull-like bill. These were photographed on the ferry from the North to the South Island, New Zealand and at NDUTU lodge, Ngorongora Conservation Area.