Birds that have a distant hearing

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Before I explain how to breed birds swallow, it would be nice we first know the characteristics, types, and properties owned swiftlet.
Swallow is an insectivorous bird that is aerial and gliding. This bird is dark. Fly fast with medium body size. The wings are narrow and pointed crescent. Swallow wings are very strong. Her legs are so small that these birds never settle on a tree. Its beak is very small. Swallow has a habit of dwelling in caves or houses that are quite damp, dim to dark. Swallow using the ceiling to attach the nest as a place to rest and breed.

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There are several types of swallows known in Indonesia that can produce nests. However, not all nests produced can be consumed and have properties. Due to suitable environmental conditions, Indonesia has six types of swallows. Some of these types can be distinguished by body size, sound, feather color, behavior in making nests, and materials used in making nests. Because swallow birds like to fly flying in the air, swallow is often called a swallow.
Many people argue, that birds of sriti are swallows. Birds sriti nesting at home and nest can be used to incubate swallow eggs. Originally, this bird is considered a kind of cow swallow because cursory almost the same. The upper body feathers are shiny blackish black and have no small feathers on the toes. While the cow swallow, feathers covering the body of a shiny blue and shiny on the toe is small fur.