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Edible bird's nests, also known as swallow nests (Chinese: 燕窝; pinyin: yànwō), are bird nests created from solidified saliva by edible-nest swiftlets, Indian swiftlets and other swiftlets of the genera Aerodramus, Hydrochous, Schoutedenapus and Collocalia, which are harvested for human consumption. Edible swiftlet nests, packaged for sale
The nest before use in bird's nest soup. The nest used in bird's nest soup is composed entirely of saliva. The soup is made by soaking and steaming the nests in water. It is said to improve kidney health, reduce phlegm, and to be an aphrodisiac. [10] [16] The nests can fetch high prices and many colonies are harvested commercially.
Mangrove swallow perching next to the Sarapiqui River. The mangrove swallow is a solitary bird; its nests are not found closer than 50 metres (160 ft) away from each other, and usually have about 300 metres (1,000 ft) separating them. The nest itself is built in natural or artificial cavities near water, usually in a tree stump or dead tree. [9]
The greater striped swallow is common, unafraid of humans, and has benefited from the availability of nest sites around habitation. It feeds mainly on flying insects, but has been known to eat small fruits. It is a bird of dry open country, such as grassland, and has a preference for hills and mountains.
The barn swallow is a bird of open country that normally nests in man-made structures and consequently has spread with human expansion. It builds a cup nest from mud pellets in barns or similar structures and feeds on insects caught in flight. [5]
The cliff swallow or American cliff swallow (Petrochelidon pyrrhonota) is a member of the passerine bird family Hirundinidae, the swallows and martins. [2] The generic name Petrochelidon is derived from the Ancient Greek petros meaning "stone" and khelidon (χελιδών) "swallow", and the specific name pyrrhonota comes from purrhos meaning "flame-coloured" and -notos "-backed".
The white-throated swallow (Hirundo albigularis) is a small bird in the swallow family. It is a common species, found in southern Africa, which has benefited from the increased nesting opportunities presented by the construction of bridges and dams.
Petrochelidon is a genus of birds known as cliff-nesting swallows.The genus name Petrochelidon is from the Greek words petra, "rock", and khelidon, "swallow". [2]The genus includes all of the five species of birds commonly called cliff swallow, and contains the following species: