The greater crested tern, scientifically known as Thalasseus bergii, is a marine bird belonging to the tern family. It is a large tern species that can be found in various coastal regions around the world.
Reaching a length of approximately 50 centimeters, the greater crested tern is characterized by its distinctive appearance. It has a primarily white plumage that contrasts with its dark gray back and wings. Its most notable feature is the elongated black crest on its head, which extends from the forehead to the nape. During breeding season, the crest becomes more prominent and a black patch develops around its eye.
These terns are highly skilled flyers and utilize their long, slender wings to soar gracefully over bodies of water. They are excellent divers and plunge into the water to catch fish, their primary food source. They are also known to feed on crustaceans and squid.
The greater crested tern typically nests in large colonies on islands, coastal dunes, or sandy beaches. They construct their nests using materials such as vegetation or simply lay their eggs directly on the bare ground. They usually lay two or three eggs, which are incubated by both the male and female for about three weeks.
Due to their extensive range and relatively large population size, the greater crested tern is not currently considered threatened or endangered. However, like many seabirds, they are susceptible to habitat loss, disturbance by human activities, and pollution. Conservation efforts are important to ensure the ongoing survival of this beautiful and ecologically important species.
