Step outside on an August evening, and you might see glowing dots floating over the grass. Right now, members of the Alitaptap community are logging firefly sightings all across the map. On August 5, 2026, observers spotted Common Eastern Fireflies in Brown Deer, Wisconsin, and Ann Arbor, Michigan. Others logged sightings around Lake Hopatcong, New Jersey, and in busy parks across New York City. Farther away, people reported Sneaky Elves in Kansas and Kentucky, Dark Fireflies in Colorado, and European Glow-worms in France.
Seeing these little lights is exciting. You might want to grab a flashlight, run into the yard, and take a quick photo with your phone. But hold on for just a moment. The way you look for fireflies makes a huge difference to the insects. A sudden bright white flash can ruin their evening. It can even stop them from finding a mate. Fortunately, you can see and photograph these amazing beetles without hurting them at all. All it takes is a little patience, the right tools, and good night habits.
How Fireflies Talk in the Dark
Fireflies do not make light just to look pretty. Their flashes are a real language. Male fireflies fly through the air and flash a specific pattern. Each species has its own code. For example, the Common Eastern Firefly flashes while flying in a shape like a glowing letter J.
Female fireflies usually sit still in the grass or on leaves near the ground. They watch the sky for the right flash code. When a female sees a male of her own kind, she waits a set number of seconds and flashes back. Then the male flies closer and flashes again. They keep talking back and forth with light until they meet.
This conversation is quiet and delicate. It relies on total darkness. If something bright breaks into their conversation, the beetles get confused. They cannot read each other's light signals in the dark.
Why Bright White Lights Break the Signal
Imagine trying to whisper a secret to your friend across a crowded room. Now imagine someone turns on a loud, blaring fire alarm right next to you. You would not be able to hear your friend at all.
That is what a white flashlight or a phone camera flash does to fireflies. A beam of white light acts like a blinding wall. To a tiny beetle, a regular flashlight beam is thousands of times brighter than its own glow.
When you shine a bright white light on fireflies, two bad things happen. First, the beetles stop flashing. They think a predator is near, or they think the sun came up. They hide under leaves and stay quiet. A single white flash can shut down the light display in your yard for twenty minutes or longer.
Second, white light blinds the fireflies temporarily. Firefly eyes are built to see faint flashes in deep shadows. A sudden bright glare overloads their visual system. Until their eyes recover, they cannot spot the dim answer of a mate waiting in the grass. If fireflies spend their brief adult lives hiding from bright lights, they cannot lay eggs for the next generation.
The Magic of Red Light and Night Vision
You do not have to stumble around in total darkness to watch fireflies. You just need to change the color of your light.
Human eyes have two main ways of seeing. In daylight, we see rich colors and sharp details. In the dark, our eyes switch to a different system that relies on a chemical called rhodopsin. It takes your eyes about twenty to thirty minutes to build up this chemical in the dark. Once it builds up, you can see paths, trees, and glowing insects surprisingly well. Scientists call this process dark adaptation.
If you shine a white light into your eyes, that night-vision chemical breaks down instantly. Your eyes reset to zero, and you have to wait another half hour to see in the dark again.
Red light works differently. Human night vision is far less sensitive to red light. A soft red light lets you see where you are walking without destroying your night vision. Even better, fireflies cannot see red light very well either. Their eyes are tuned to yellow, green, and blue light—the colors of their own flashes and twilight skies. A red beam passes right by them without disrupting their secret light conversations.
You can make a red flashlight easily at home. Take a regular flashlight and cover the glass lens with red cellophane paper. Wrap a rubber band around the top to hold the paper tight. You can also use red tape or red plastic wrap. Some outdoor headlamps come with a built-in red light setting. Always turn that setting on before you step outside into the night.
How to Photograph Fireflies with Your Phone
Taking pictures of fireflies is tricky because they are tiny and move fast in the dark. If you turn on your camera flash, you will end up with a picture of grass and scared insects. The firefly flashes will disappear completely.
To take great photos with an ordinary smartphone, follow these practical steps.
First, turn off your flash completely. Look for the lightning bolt icon on your camera app and tap it until it says "off." Never leave it on "auto," because the phone will fire the flash as soon as it notices the dark.
Second, keep your phone steady. When a camera shoots in the dark, it keeps its shutter open longer to gather light. If your hands shake even a little bit, the picture becomes a blurry smear. Rest your phone on a fence post, a wooden bench, or a small camera tripod. You can also press your elbows against your ribs to hold your hands still.
Third, check your camera settings for Night Mode or Manual Mode. Many modern phones have a night setting that automatically captures light over two or three seconds. If your phone lets you adjust exposure time, set it to three or five seconds. During those seconds, every firefly flash leaves a bright line or dot on your photo.
Fourth, lock your focus. Cameras struggle to focus in pitch-black settings. Tap a distant light or a clear tree trunk on your screen, then hold your finger down to lock the focus distance. That keeps the camera from constantly searching for focus while fireflies blink around you.
Rules of the Trail for Safe Firefly Watching
When you go out to watch fireflies, remember that you are visiting their home. Sharing a viewing spot with other people and insects requires good habits.
Stay on marked paths and clear dirt trails. Many female fireflies do not fly at all. They sit in leaf litter, low bushes, or moist grass. Firefly larvae—the young grubs that eat snails and soft insects—live on the ground in damp soil. If you walk off the trail into tall grass, you might step on females or larvae without knowing it.
Keep your phone screen dim. A bright phone screen playing videos or sending messages throws off enough white light to disturb fireflies near your feet. Dim your screen all the way down, or keep your phone inside your pocket until you are ready to take a photo.
Avoid catching fireflies in glass jars. While holding a firefly in a jar is a classic summer activity, tight jars dry out quickly. Heat from your hands can warm the glass too much. If a jar lacks moisture, the insect can dehydrate within an hour. It is always safer to watch fireflies with your eyes and camera while they fly free.
Respect other viewers around you. If you visit a popular park or firefly spot, keep your voice low. Turn off all lights when you arrive at the viewing area. Give everyone a chance to let their eyes adjust to the dark.
When you log your sightings on Alitaptap, note the kind of habitat where you saw the lights. Whether you saw Common Eastern Fireflies in your backyard or spotted a rare species on a woodland trail, recording your observations helps scientists map where firefly populations are staying healthy. By using red light and staying quiet in the dark, you keep the night safe for both the insects and the people watching them.