Swift swiftlets cannot be bred artificially.

Swift, Collocalia; cave swiftlets, a kind of bird, the tarsometatarsus is completely naked or almost completely exposed, and the shaft of the tail feathers is not exposed. Distributed in India, Southeast Asia, and the Malay Archipelago, they live in groups.

Golden swiftlets are accustomed to going out during the day and returning late. The average adult swiftlet body thickness (including hair) is about 4cm, body length is about 10cm, wings spread is about 22cm, weight is about 20g, and the tail is short and flat. The feet are short and soft, and all four toes face forward and cannot be grasped. Therefore, unlike ordinary birds with three toes facing forward and one toe facing back, which can perch on wires or walk on the ground, swiftlets can only use four toes. Hook to hang from a vertical wall or rock ledge. The foraging activities of swiftlets are all carried out in flight. The activity range is within a radius of 50 kilometers, and they only eat insects or small creatures. In addition to drinking water, they will fly low and put their mouths on the surface of the pool. Go up and drink as you fly.

The special physiological structure determines that swiftlets cannot be cultured artificially. We often talk about artificial breeding. In addition to providing habitats for humans, we also need to provide food and feed them. For the swiftlet, the swiftlet house is just an environment provided by humans for it to live in, but humans cannot play a role in its diet, growth and activity range.

So, house swallows are not artificially bred. Like cave swallows, they are wild animals. For the owners of house swallows, the swiftlet is like a treasure. They will do their best to protect it. They will not allow other animals to enter or inhabit. They will also maintain the environment of the house very well. Therefore, , the quality of bird's nests from natural houses will also be higher.