Aviculture
The Java sparrow has been a popular cage bird in Asia for centuries, first in Ming Dynasty China and then in Japan from the 17th century, frequently appearing in Japanese paintings and prints. Meiji-era writer Natsume Soseki wrote an essay about his pet Java sparrow. In the late 1960s and early 1970s the Java sparrow was one of the most popular cage birds in the United States until its import was banned. Today it remains illegal to possess in California because of a perceived threat to agriculture, although rice-dependent Asian countries like China, Taiwan and Japan have not regulated the bird.
In Asia the Java sparrow is most often raised almost from birth by human breeders and owners, and they become very tame and attached to humans. As such, they can be normally kept in relatively small cages, but let out for indoor exercise without their attempting to escape. In captivity, a variety of colorations have been bred, including white, silver/opal, fawn/isabel, pastel, cream and agate (which currently is rare within Europe captive specimens) along with the pied Java Sparrow (called the "sakura buncho" in Japan).
Read more about this topic: Java Sparrow