The gull-billed tern is a palearctic migrant in East Africa from August to April. The top photo (Lake Magadi) and the 2nd row photo of gull-billed (center), common and lesse crested terns (Ushongo) are courtesy of Paul Oliver. The non-breeding birds in the 3rd row were photographed at Lake Burunge (left) and Pembe Abwe. The photo with zebras was in the Serengeti. The middle bird was photographed at Lake Albert (Uganda), courtesy of Karine Van der Vurst. The breeding bird in the lower photo was in Pangani, courtesy of Valéry Schollaert. Click the bottom photo to see 13 enlargements.