Summer Insect Chorus Guide: Which Sound Belongs to Whom?

This guide sits on top of the backbone formed by Cicada, Why Do Cicadas Sing Constantly?, Firefly and Honey Bee. Not everything you hear on the same summer evening is a cicada. You’ll read first the time, then the place, and then the mechanism. Looked at this way, summer insect sounds come across not as a jumble but in layers.

First, separate the signs

The biggest mistake in this is pinning a single sound on a single species. So when you go out into the field, don’t break the order:

1. Fix the time. 19:00-22:00 is the golden window.
2. Choose the setting. Treetop, meadow, indoors or scrub edge?
3. Note the sound. A continuous buzz, a short trill or wing rubbing?
4. Make a recording. Your phone’s microphone is enough; turn off the flash.
5. Match the species with the time. Daytime, early evening, night.
6. Listen along with your eyes. Is there movement or not?
7. Then verify. Compare with xeno-canto and community recordings.

This simple flow breaks a concert that sounds like one piece to the ear into its parts.

1) Cicada: the engine sound of a hot day

The cicada is mentioned especially with the species Cicada orni and Cicadetta. Its sound mechanism relies on the rapid vibration of a stiff membrane called the timbal. The male makes the sound; the aim is to call a mate. What you hear is usually continuous, persistent and active during the day. The clearest scene is a hot day and a high branch in a treetop.

On the frequency side, a rough reading sits in the 4-5 kHz band. That’s why it leaves a thin but powerful buzzing feeling in the ear. You don’t separate the individual pulses; the brain gathers them into a single stream.

2) Grasshopper: wing rubbing, late afternoon and meadow

When we say grasshopper, we’re talking about a broad group; especially the Tettigoniidae line. Here the mechanism is stridulation, that is, wing rubbing. The sound often becomes distinct in the early evening hours and as it slides into night. Its ground is meadows, scrub edges and clearings under trees.

The grasshopper’s sound doesn’t flow uninterrupted like the cicada’s. It comes more clipped, at short intervals and in bursts here and there. That’s why the rhythm you hear on a night walk may be not an “engine” but more like “tick-tick-short rub”.

3) Cricket: night trill, on the border between indoors and outdoors

The cricket family is Gryllidae. It also sings by rubbing its wings. But its signature is a faster, higher-frequency trill. Roughly, the 3-5 kHz band does the job here. At night you hear it at the foot of the wall outside the house, and also when it gets inside. Because temperature and hiding places shape its behavior.

The cricket usually rests under shrubs, at the foot of walls, between stones and in damp corners. Its sound comes short, quavering and at a high rate. It is not the “summer noise coming from the trees” the way the cicada is; it is more of a night rhythm close to the ground.

4) Katydids and long-horned summer insects: rhythmic calls

The long-horned groups known in everyday language as “rain bugs” or “katydids” are often active at night. Their sounds are rhythmic, intermittent and sometimes distinct enough to echo their name: “katydid-katydid”. This call often comes from the shrub, hedge and under-tree layer.

The distinguishing clue here is rhythm. There is no continuous buzzing. A call comes, there’s a gap, then it comes again. Because of these gaps, the sound works like nature’s metronome in the background.

5) Firefly: silent but with a message

The firefly communicates not with sound but with light. That’s why you should think of it not inside the insect concert but outside it. It is visible at night; but it gives no audible signature. This distinction is important. If you search as if everyone has a sound, you’ll wait for the firefly in the wrong place.

That’s why the first lesson for children is this: some insects talk, the firefly glows. If you’re looking for sound, there’s silence there.

Rough frequency and rhythm map

The table below is for telling species apart not with a scientific microscope but with a field ear:

Children’s learning card

Keep this card in your pocket in the field:

When is a professional needed?

If the field recording is going to be not a hobby but a nature inventory, the species identification needs to be verified with an expert. Especially if you’re doing a protected area study, an environmental impact report, a school garden observation or a municipal survey, an entomologist or an experienced naturalist will do the job. If sound recordings overlap one another, the ear alone isn’t enough; recording analysis is needed.

The most common mistake

• Thinking every thin sound is a cicada.
• Recording during the day and looking for a night species.
• Counting trees, meadow and scrub as the same place.
• Looking for the firefly by sound.
• Spoiling the night with a phone flash.
• Making a definite judgment from a single recording.

The right method in the field

The essence is simple: first the time, then the layer, then the mechanism. If the day is hot, the cicada comes first. In the early evening hours the grasshopper takes the stage. As it moves into night, cricket and katydid sounds dominate. The firefly, on the other hand, stays silent and appears with light.

The best game you can play with a child is the “tell the sounds apart” game. First open three boxes: tree, meadow, around the house. Then write a time for each sound: such as 14:00, 20:00, 23:00. Then make a short phone recording and listen back. As the child answers the question “is this sound long or short, continuous or broken”, ear training begins. If you add notes to the recording, you’ll be wrong less often the next day when you look for the same sound. Comparing with xeno-canto samples also works well; you get the live recording read like a field sound, not like a laboratory sound.

If you read this correctly, the summer evening stops being chaos. Ear, time and place work together. The result: summer insect sounds are no longer a single hum but a field map that can be read piece by piece.

Source backbone

• Doğa Derneği — Biodiversity and Climate (in Turkish)
• Merlin Bird ID — Cornell Lab
• iNaturalist — About
• xeno-canto explore: Cicada
• xeno-canto explore: Orthoptera
• Reference on Singing Insects of North America
• Holzapfel, Macedonia Mediterranean Cicada Atlas — archive note

Related reading

• Cicada
• Why Do Cicadas Sing Constantly?
• Firefly: Bioluminescence and Ecology
• Honey Bee