Ratina de Formosa Pnoepyga formosana

Minuscule endemic songbird. Short wings, very short tail, and rather long legs give it the appearance of a brown ping-pong ball set on tiny chopsticks. Dark brown above, black-and-white scaly pattern below. Constantly shakes its wings as if cold. Moves about on the ground and in low vegetation in montane forests, where very difficult to see. Song a loud, strident, high-pitched series of three whistled phrases, with a pause after the first.