Bats do not have a uniform reaction to light; their responses depend on the species, the intensity of the light, and their flying habits. Some fast-flying species are drawn to artificial lights to hunt concentrated insects, while slow-flying or light-sensitive species will completely avoid illuminated areas to stay safe from predators.
Light doesn't necessarily cause physical pain to bats, but their eyes are highly sensitive. Bright, artificial light at night profoundly disrupts their survival and natural behaviors—such as navigation, roosting, and foraging.
WNS is the number one threat to bats, killing more than a million bats each year and causing mortality rates that approach 100% at some sites.
Contrary to the "blind as a bat" myth, bats have excellent eyesight and use light to navigate. However, excessive artificial light (like bright security lights) confuses them, causing them to become disoriented, miss peak feeding times, abandon their roosts, or become highly vulnerable to predators.
High-intensity, elevated and upward-facing lights will have the strongest effect. White lighting is harmful to a wide range of bat species. Red lights can be seen by some bats, but are the least likely to affect most species. Amber and red lights are also less likely to attract insects away from their natural habitats.
Bats are highly sensitive to noise and generally hate high-frequency sounds (ultrasounds) and irregular, loud noises. Because these nocturnal creatures rely heavily on echolocation to navigate and hunt, overlapping frequencies and sudden, jarring sounds interfere with their ability to "see" their surroundings, making them uncomfortable.
Bats are among the biggest sleepyheads in the animal kingdom! They can sleep up to 20 hours a day, often hanging upside down to conserve energy and stay protected. Nature shows us that rest isn't optional—it's essential for survival, balance, and overall health.
“Bats hate strong scents, bright lights, and high-frequency sounds that disrupt their environment.”
Yes, bats can hear human voices. While their famous echolocation uses ultra-high frequencies that are beyond human perception, bat hearing covers a broad range. Their hearing stretches from as low as 700 Hz to over 200,000 Hz.
Bats evolved to be nocturnal primarily to avoid daytime predators (like birds of prey) and to escape the intense heat of the sun, which can cause their thin, delicate wings to overheat. By hunting at night, they also face less competition for food.
Bats use hibernation to reduce their energy consumption during difficult, colder periods, when insect prey is limited. Generally, British bats will enter hibernation around early October; emerging anytime from March to late April and into May.
Bats do not have a single apex predator. Instead, they face different threats depending on their size, species, and habitat. Their biggest predators include owls, hawks, falcons, snakes, and domestic cats.
Bats make noise at night primarily to navigate, catch prey, and communicate with each other. While their sharp, high-frequency chirps are often used for echolocation, louder screeches and chatters serve as social calls to claim territory, defend food, or interact with other bats.
Bats strongly dislike intense, pungent odors, with peppermint and eucalyptus being the scents they hate the most. They are also highly repelled by other strong fragrances such as cinnamon, cloves, and mothballs.
Case study: Grey headed flying Foxes
This eastern Australian bat species lives in large groups but are segregated by sex outside of breeding season. As such, many bats are likely 'seasonally bisexual'. Males and females have been observed in sexual and affectionate same-sex behaviour.
While the rabies virus is usually spread through a scratch or bite wound, any bare-handed contact that you have with a rabies-vector species is considered potential exposure.
The Bible mentions bats only three times, explicitly classifying them as "unclean" flying creatures in the Old Testament dietary laws.
Can bat noises be heard by humans? While some bat noises can be heard by humans, many are at frequencies too high for the human ear to detect. Special bat detectors are often used to record and analyze bat vocalizations.
Many people are unaware that over 500 plant species rely on bats to pollinate their flowers, including species of mango, banana, durian, guava and agave (used to make tequila). So, next time you drink some tequila or eat a mango, say thanks to the bats! The pollination of plants by bats is called chiropterophily.
Bats go to sleep in the early morning, usually just before dawn (around 5:00 AM to 6:00 AM). They are nocturnal mammals, spending the daytime hours resting.
Collisions with wind turbines and white-nose syndrome are now the leading causes of reported MMEs in bats. Collectively, over half of all reported MMEs were of anthropogenic origin.
Bats don't like light. Although they don't rely too much on their poor sight, they can see, and they prefer dark areas. This is why bats are notorious for roosting in caves. Because you lose a little light with each bend in a cave, you'll often find them roosting deep within, but that's only the case in nature.
The koala is the animal that sleeps about 90% of its life. They snooze for up to 20 to 22 hours a day. This extreme sleep schedule is an energy-saving survival strategy required to digest their diet of eucalyptus leaves, which are highly fibrous and low in nutrients.
Yes, bats are extremely heavy sleepers! During the day, they are in a deep, inactive slumber for up to 16 to 20 hours daily. They go into an even deeper, coma-like state called torpor to conserve energy, and hibernate for up to six months during the winter.
For bats, this can only be done when pups are volant (flying). Exclusion should never be done during hibernation which is generally mid-October through early April (there is also no animal waste being produced during this time).