Aerial Acrobats: Masters of the Sky

#6 The magnificent Frigatebird boasts the largest wingspan-to-body-weight ratio of any bird, allowing it to stay aloft for weeks and reach 95 mph (153 km/h) by skillfully riding air currents. #5 Not to be outdone, the Mexican Free-tailed Bat shatters expectations with recorded horizontal flights up to 100 mph (160 km/h), often aided by high-altitude jet streams, making it a contender for fastest flying mammal.