Spine Tailed Swift
Spine-tailed swift (Hirundapus caudacutus) can fly with a speed of 171 km / h (106 mph). Beat its competitors, frigate birds which can only be flying at 153 km / h (95 mph). These birds have very short legs which they use just to stick on vertical surfaces. They build nests in rock crevices in cliffs or tree holes. They rarely even been on the ground and spend most of their lives in this udara.Burung Swifts breed in the rocky hills in Central Asia and southern Siberia. This species is migratory, winter in the south to Australia.Category Article Bird
