But a Mexican free-tailed bat would easily beat it in a race. However, flying parallel with the ground – what researchers call horizontal flight – the peregrine’s speed maxes out around 60 mph. It is an extraordinarily aerodynamic bird, aided by efficient respiratory and circulatory systems. The peregrine uses gravity to achieve these speeds. If you’ve ever had pigeon feathers and blood raining down on you on a city street, you’ve seen the aftermath of a hunting peregrine. The peregrine achieves the speeding when diving onto prey, smacking into it like a torpedo from above. The undisputed overall speed champion among animals is the peregrine falcon, capable of reaching speeds well in excess of 180 mph (and some sources claim even faster). Photo © Janet Haas The Fastest Thing With Wings? This allows them to maximize their speed with little threat of injury. At that height, they don’t have to pivot around trees, terrain, houses and other obstacles. (In fact, if bats had a strong tail wind, they would actually reduce their speed for easier travel).įree-tailed bats typically hunt insects more than a half mile in the air. They were not diving from the air or using winds to increase speeds. They followed one bat on its maneuvers each night, and found that the bats were routinely reaching speeds of 100 miles per hour.Įven more astonishing, the bats were doing this purely through wing power. The researchers attached temporary transmitters to bats as they left Frio Cave, a well-known roost site in the Texas Hill Country. A Mexican free-tailed bat in Eckert James River Bat Cave Preserve in Mason, Texas. As far as those birds…well, more about that in a bit. In 2016, a paper published by University of Tennessee researchers found that the Mexican free-tailed bat could reach speeds up to 100 mph, making it by far the fastest mammal on earth. Mammalian flight speed, after all, paled in comparison to birds. However, most people ignored the bat’s considerable athletic ability. It should be noted that this would arguably be fast enough to win a bronze medal in the Mammal Speed Olympics. Previous research indicated it was capable of speeds up to 59 mph. The Mexican free-tailed bat ( Tadarida brasiliensis) has long, thin wings built for fast flight. And some of those shapes help bats go fast. Many also consider them to be relatively slow, especially in comparison to birds.Īs with birds, bats come in a variety of shapes and sizes. ![]() Photo © Karine Aigner The Aerial Speedsterīats are known as highly maneuverable fliers, capable of using echolocation to snag mosquitoes and gnats in the air. Bat emergence at Bracken Cave, San Antonio, Texas. That’s because the fastest mammal doesn’t run. ![]() But none of these sprinters are the fastest mammal of all. (Yes, the Great Plains of North America once were home to cheetahs).Īs such, speed in mammals is often portrayed as an evolutionary foot race between predator and prey. Not coincidentally, the springbok lived in the same habitat as cheetahs (and still does in many places). The springbok, an antelope species of southern Africa, can run up to 55 mph. The runner-up in the fast mammal contest is the pronghorn, capable of speeds around 60 mph hour. It’s an exceptional sprinter on grassy plains, capable of overwhelming prey in a short burst of speed. True, the cheetah has been clocked at 75 miles per hour, and can reach speeds of 60 mph in just three seconds. So let’s get this out of the way: The fastest mammal on earth is not the cheetah. Research now sheds new light on mammal speeds. In fact, I’d guess that this is one of the very first bits of nature trivia you learn in school. A certain critter probably pops immediately into your head.
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