The Oomedoodle is a legless bird native to Australia. It is so named because of the distinctive cry it makes every time it lands on its exposed nether regions: "Oomedoodle! Oomedoodle!"
They're said to be highly intelligent and make great pets because of their facility with language (even better than that of parrots). However, owners should be warned that their language tends to be vulgar.
Source: Southern Highland News