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The western population, the California least tern, was listed as an endangered species in 1972 with a population of about 600 pairs.With aggressive management, mainly by the exclusion of humans via fencing, the Californian population has rebounded in recent years to about 4500 pairs, a marked increase from 582 pairs in 1974 when census work began, though it is still listed as an endangered ...
The California least tern (Sternula antillarum browni) is a subspecies of least tern that breeds primarily in bays of the Pacific Ocean within a very limited range of Southern California, in San Francisco Bay and in northern regions of Mexico. This migratory bird is a U.S. federally listed endangered subspecies. The total population of the ...
An endangered language is a language that it is at risk of falling out of use, generally because it has few surviving speakers. If it loses all of its native speakers, it becomes an extinct language. UNESCO defines four levels of language endangerment between "safe" (not endangered) and "extinct": [1] Vulnerable; Definitely endangered; Severely ...
[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.
The little tern (Sternula albifrons) is a seabird of the family Laridae. It was first described by the German naturalist Peter Simon Pallas in 1764 and given the binomial name Sterna albifrons . [ 2 ] [ 3 ] [ 4 ] It was moved to the genus Sternula when the genus Sterna was restricted to the larger typical terns. [ 5 ]
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. 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 feathers.
Most Indonesians also speak at least one of more than 700 local languages, [247] often as their first language. Most belong to the Austronesian language family, while over 270 Papuan languages are spoken in eastern Indonesia. [247] Of these, Javanese is the most widely spoken [74] and has co-official status in the Special Region of Yogyakarta ...
[12] [13] [14] The Indonesian language is primarily used in commerce, administration, education and the media, and thus nearly every Indonesian speaks the language to varying degrees of proficiency. [15] Most Indonesians speak other languages, such as Javanese, as their first language. [2] This makes plurilingualism a norm in Indonesia. [15]