Thousands of Mexican free-tailed bats emerge from the Bracken Cave in Texas at dusk to feed on insects.
Bats Flying at Dusk Bracken Cave is home to the world's largest bat colony. © Karine Aigner

Stories in Arizona

Amazing Facts About Bats

How much do you know about the world's only flying mammal? Test your knowledge with these 10 bat facts.

There are 1,100 species of bats worldwide, with 40 species in the United States alone. Though small in physical size, bats have a large footprint, making up one-quarter of the world's mammals.

Learn more about one of the natural world’s unsung heroes:

1. Bats can live more than 30 years and can fly at speeds of 60 miles per hour (or more!). 

In fact, a 2016 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.

2. Bats can find their food in total darkness. 

Not all bats are nocturnal (meaning they're awake at night). But those that are can locate insects to eat by emitting inaudible high-pitched sounds, 10-20 beeps per second and listening to echoes. This is called echolocation.

Rafinesque’s big-eared bat in flight.
RAFINESQUE'S BIG-EARED BAT Some bats can find their food in total darkness. They do this using echolocation, which is emitting a high-frequency sound and listening to the echo. © John C. Abbott

3. Bats can eat up to 1,200 mosquitoes an hour. 

Often, bats consume their body weight in insects every night, helping keep bug populations in check.

Tell Congress: Save Bat Habitats

Help Save Bats

4. More than half of the bat species in the United States are in severe decline or listed as endangered. 

In addition to loss of habitat, one of the most dire threat comes from white nose syndrome, a disease that has decimated bats in the U.S. and Canada. The Nature Conservancy collaborated on a white nose syndrome breakthrough in 2015. Bats were treated with a common bacterium that seems to stop the growth of the white nose fungus, and were then successfully released back into the wild.

Help Save Bats The Nature Conservancy is working to fight white nose syndrome, a disease that devastates bat populations in the United States and Canada.

5. Some bats hibernate in caves through the cold winter months.

Bats can also survive freezing temperatures, even after being encased in ice.

6. Baby bats are called pups! Most bats have only one pup a year.

Bat mothers can find their babies among thousands or millions of other bats by their unique voices and scents. Having only one pup a year makes bats extremely vulnerable to extinction.

A pallid bat with wings outstretched hanging on rock.
Pallid Bat The pallid bat feeds on ground-dwelling pray such as scorpions and centipedes. © The Nature Conservancy

7. Bat droppings, called guano, are one of the richest fertilizers. 

Bat guano was once a big business. Guano was Texas's largest mineral export before oil! Austin is a seasonal home to North America’s largest urban population of Mexican free-tailed bats, which live beneath the Congress Avenue Bridge. Approximately 1.5 million bats reside there!

8. The world’s largest bat is the "flying fox", which lives on islands in the South Pacific.

The flying fox bat has a wingspan of up to 6 feet. In contrast, the world’s smallest bat is the bumble bee bat of Thailand, which is smaller than a thumbnail and weighs less than a penny.

A group of flying foxes, the world’s largest bat, hanging from a tree branch.
Flying Foxes The world’s largest bat is the "flying fox" that lives on islands in the South Pacific. © John Skewes/Flickr Creative Commons

9. Pallid bats eat scorpions! 

Pallid bats appear to be immune to scorpion stings, even from the most venomous scorpion in North America, the Arizona bark scorpion. Up to 70% of a pallid bat’s diet can be scorpions at certain times of the year.

10. The Bracken Bat Cave in Texas is home to the world’s largest bat colony.

Millions of Mexican free-tailed bats roost in the Bracken Cave each year between March and October. Learn more about The Nature Conservancy's efforts to secure 1,521-acres to protect this vital species.

Bracken Bat Cave Watch Mexican free-tailed bats emerge from the Bracken Bat Cave in Texas.