swiftlet bird which lives in caves.
This bird is famous for its nest which is taken and used for soup, especially by the Chinese. The little bird glues its nest
together with its own saliva. This nest is taken by the people who trade them. So the little bird makes another nest, but
the second does not have as much saliva, and is considered inferior. Still, it is also taken. By then the little bird has
very little time and energy to make a third nest for its family, and its saliva is now streaked with blood. This nest is not
taken, but it is so weak that it often falls apart and the eggs are lost. Therefore, God's beautiful little acrobat of the
sky is becoming extinct.