Toriyama's own studio is called Bird Studio, which is a play on his name; meaning "bird". Toriyama does nearly all of the work at Bird Studio himself, and even when he employed an assistant (until 1995, and only one at a time, which is itself rare for manga artists), the assistant did mostly backgrounds. The studio founded in 1983 has produced occasional one-shots, or stand-alone manga that are not serialized, and some other design work. All of Toriyama's manga after "Dragon Ball" tend to be short (100–200-page) stories, including "Cowa!", "Kajika", and "Sand Land".