The best and most authentic bird's nest brands are: House of Swallows, Little Fairy Stew, and Classic Bird's Nest.

1, House of Swallows

House of Swallows began in 1997, the domestic professional bird's nest production and processing bases, focusing on high-quality bird's nest research and management of enterprises. The company has pioneered the business model of "order now, eat now, stew now, deliver now", and is committed to providing safe, nutritious and convenient bird's nest products by strictly selecting the finest bird's nests and supplementing them with innovative technology.

2. Xiao Xian Stew

Small Xian Stew is an Internet enterprise that focuses on the production of freshly stewed bird's nest. With the same-day stewing and cold delivery, users can enjoy fresh, nutritious and sufficient bird's nests more conveniently.

3. Zhengdian Bird's Nest

Chengdian is a well-known brand in the bird's nest products industry, integrating the whole industrial chain of bird's nest enterprises, including swiftlet harvesting, bird's nest processing, scientific research, storage, import/export trade, and branding operation. Its low-temperature stewing and sterilization technology is well known in the industry.

The Formation Process of Bird's Nest

Bird's nests are formed from the nests created by the saliva of specific birds, namely, the Golden Swallow and the White Bird Swallow (also known as the Black Swallow). Golden and White Bird Swallows choose to build their nests in high places such as cliffs, caves or gables of buildings during the breeding season.

Female swallows lay eggs and incubate them in the nest. The incubation period usually lasts 15 to 21 days, during which the females will take turns to incubate the eggs. After incubation, female swallows leave the nest in search of food. They mainly feed on flying insects, pollen and nectar. When the swallows are feeding, their salivary glands will secrete saliva.

Male swallows wait for the females to return to their nests and then begin to bind the nesting materials and build their nests with the saliva they secrete. After a long time of secretion and exposure to air, the proteins in the swallow's saliva begin to solidify and form clumps. Swallows continuously bond the saliva clumps to the nesting materials while building their nests. This process takes days to weeks to complete, forming a strong nest structure.

Reference for the above: Baidu Encyclopedia - House of Swallows