Java Sparrow Day, or Buncho no Hi, is observed in Japan every October 24 to celebrate the Java sparrow, a small passerine bird native to Indonesia that has become a popular pet in Japan. This day was chosen because October typically marks the availability of recently hatched Java sparrows in pet stores, and the date itself plays on the phrase “happiness in your hands.” Java sparrows have been bred in Japan since the 17th century and are known for their friendly disposition, making them appealing pets. They can live comfortably in small cages and require enrichment such as toys and companionship. The birds exhibit various colors, with males being distinguishable by their singing. To celebrate, people can learn more about these birds and enjoy photos and videos online, and potential pet owners are encouraged to check local laws regarding ownership.