Lesser Crested TernThalasseus bengalensisWhere and when to see them

The lesser crested tern is a streamlined coastal seabird with a bright orange bill, pale grey upperparts and a shaggy black breeding crest. Its distribution includes the Red Sea, Indian Ocean and parts of the Mediterranean. Colonies can contain hundreds or thousands of tightly spaced nests on low islands. These concentrations make the species conspicuous but also vulnerable to disturbance, egg collection and changes to small breeding islands.

Size

35-43 cm long

Weight

180-240 g

Lifespan

Not reliably established

Status

Least Concern

Flocks commute between coastal feeding waters and communal roosts, often mixing with other terns. Birds hover briefly before plunging after fish and may follow predatory fish that drive shoals toward the surface. Courtship includes fish presentations, while both parents help care for the chick. Colonies are noisy and highly social, and older chicks may gather into groups before they can fly confidently. Courtship displays often involve spectacular aerial chases and elaborate fish offerings. After fledging, young birds remain dependent on their parents for food for several weeks.

• The black crest becomes reduced outside the breeding season.
• A courtship fish can help reinforce the pair bond.
• Most pairs lay a single egg in a shallow ground scrape.
• The species breeds in both the Red Sea region and parts of the Mediterranean.

Along Egypt's Red Sea coast, spring and summer can offer opportunities to watch coastal movements and breeding activity from outside colonies. Migration adds variation in other months. Local island access and heat must be considered separately from the birds' seasonal presence. Peak breeding activity in the Egyptian Red Sea occurs from late spring through early summer, when large numbers gather at traditional colony sites. Winter months may see birds dispersing more widely along the coastline.

Lesser crested terns favour warm coastal seas, lagoons, estuaries and sheltered bays. They rest on sandbars, beaches and low rocky islands, usually nesting on open ground with little vegetation. Offshore breeding colonies may be protected or inaccessible to visitors. They are often found on sparsely vegetated islands in arid and semi-arid regions. These terns are highly colonial, forming dense nesting aggregations in suitable locations.

Small schooling fish dominate the diet, especially species available near the sea surface. Crustaceans are also taken. Adults usually carry individual fish crosswise in the bill when provisioning a mate or chick, making feeding flights useful for distant observation. Lesser crested terns primarily forage in shallow, clear coastal waters. They often hunt cooperatively, concentrating fish shoals before diving.

Common name

Lesser Crested Tern

Scientific name

Thalasseus bengalensis

Animal group

Birds

Size

35-43 cm long

Weight

180-240 g

Lifespan

Not reliably established

Status

Least Concern

Identification

Its orange bill and medium size separate it from the larger, yellow-billed greater crested tern and the usually black-billed Sandwich tern. Juveniles are distinguished by their mottled grey and white plumage and a darker bill that gradually turns orange. Its black cap extends from the bill to the nape, a key feature in all adult plumages.