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The Sandwich tern (Thalasseus sandvicensis) [2] is a tern in the family Laridae.It is very closely related to the lesser crested tern (T. bengalensis), Chinese crested tern (T. bernsteini), Cabot's tern (T. acuflavidus), and elegant tern (T. elegans) and has been known to interbreed with both elegant and lesser crested.
Harvesting gull eggs on the Solent is said to benefit Sandwich terns (Thalasseus sandvicensis) that would otherwise suffer from predation and defensive behaviors by nesting gulls; removing the gull eggs prompts replacement laying behaviors and postpones anti-tern antics for three crucial weeks. [44]
The common tern [2] (Sterna hirundo) is a seabird in the family Laridae. This bird has a circumpolar distribution, its four subspecies breeding in temperate and subarctic regions of Europe, Asia and North America. It is strongly migratory, wintering in coastal tropical and subtropical regions. Breeding adults have light grey upperparts, white ...
[5] [51] The Inca tern nests in crevices, caves and disused burrows, such as that of a Humboldt penguin. [52] The white tern is unique in that it lays its single egg on a bare tree branch. [53] Tropical species usually lay just one egg, but two or three is typical in cooler regions if there is an adequate food supply.
Breeding plumage Eggs, Collection Museum Wiesbaden. The royal tern nests on island beaches or isolated beaches with limited predators. It lays one or two eggs, usually in a scrape, an area on the ground where a tern has made a small hole to lay its eggs. In some cases, tern eggs are laid directly on the ground, not in a scrape.
The Elegant tern also differs in a slightly longer, slenderer bill, while Chinese crested tern differs in a black tip to the bill and Sandwich tern a black bill with a yellow tip. [7] Juvenile lesser crested terns resemble same-age Sandwich terns, but with a yellow-orange bill, and paler overall, with only faint dark crescents on the mantle ...
A very large number of birds were nesting in an area about 130 square metres (150 sq yd). The nests were mere scrapes in the gravel and shingle, each containing one, two or three eggs. These were smaller than the eggs of the Sandwich tern but resembled them in general appearance, though every one was differently marked. It was difficult walking ...
Sooty tern, Onychoprion fuscata; Bridled tern, Onychoprion anaethetus; Least tern, Sternula antillarum (A) Gull-billed tern, Gelochelidon nilotica (A) Caspian tern, Hydroprogne caspia (A) Roseate tern, Sterna dougallii (A) Common tern, Sterna hirundo (A) Royal tern, Thalasseus maxima; Sandwich tern, Thalasseus sandvicensis (A) Black skimmer ...