Gull-billed Tern

Ngorongoro Conservation Area, Serengeti National Park and Lake Nakuru National Park are among the six atlas places where the Gull-billed Tern is recorded. Its records concentrate most heavily in the United States, India and Spain. The atlas contains about 203,000 records of Gelochelidon nilotica across 36 countries, and the map shows where these sightings concentrate.

Because this bird is recorded in both hemispheres, the active months differ by region. Each place page in the atlas shows the particular months recorded for that area.