Three Hours Full Moon Frog Melodies; Pig, Green Tree and Southern Cricket Frogs

Why do I love listening to frog calls?  Well, the answers to that question have their origins way back into the lives of my prehistoric ancestors; long, long ago.

Three Hours Full Moon Pig, Green Tree and Cricket Frog Melodies

Today, as a deep forest and swamp audio recordist I have collected hundreds of hours of frog call recordings. 

There are recordings of almost every frog known to live here in the Florida wilds in my sound library.  Some of my favorite local frogs and their calls are; pig frogs, green tree frogs, leopard frogs, bullfrogs and many more.  

One of my all time favorite frog calls comes from the Southern cricket frog, Acris gryllus.

The click-click-click calls of Southern cricket frog choruses remind me of my childhood, having grown up in Hialeah on the fringes of the frog filled Everglades.

However when I look at just why frogs and I 'click' together I see many more reasons than just familia nostalgia.

Anatomically speaking, humans and frogs share similar designs in middle and inner ear structure. Frogs though, instead of having an outer ear like humans, have a tympanum, an outer membrane covering that acts like an exterior ear drum.  This specialized audio adaptation allows frogs to hear very low frequency vibrations; vibrations I refer to as earth whispers.

With their highly developed hearing ability frogs can detect even the faintest noise an approaching predator makes.  Over the eons our ancestors came to rely on listening to nighttime frog calls for signals that all was safe and well around the camp.  When the frog choruses would suddenly go silent, well then it was time to be on the lookout for whatever was stirring in the surrounding bush.

As long as frogs were calling from the forests around the camp our ancestors could be safely assume the area was free from danger.  They could then sleep well knowing all was clear.  From an evolutionary perspective, frog call cues have in their own way truly shaped human behavior traits.

Additionally, frog calls also usually indicate the presence of nearby water and a well developed ecosystem, habitat traits our ancestors would have sought out.

I am convinced that over deep time our human brains began to subtly associate night frog calls with the idea of a safe space to sleep and that is one of the reasons I like listening to frog call audio at night.

But not only do frog calls provide me with a sense of relaxation, they also are rich in music rhythm, key, tone and meter.

The rhythmic and repetitive nature of frog calls usually provide me with a sense of calm and relaxation. Science has shown that natural sounds can lower levels of cortisol and other stress hormones and also slow heart rate. This soothing effect can help us feel more connected to the natural world, fulfilling much of our nature connect need that can't be fulfilled in the city.

On a pure biological level, frog calls are refined vocal attempts to attract females.  Females respond best to the most beautiful calls/songs.  As such, I find that different frog species calling together create amazing nighttime musical symphonies of brilliantly composed vocalizations; soothing music to relax by, full of healing vibrations, tapping frequencies; amazing audio creations.

Moreover, most frog choruses are not only designed to attract mates but to also confuse predators.  An alpha male frog usually leads the group chorus where he is followed by other frogs in different locations around the pond who then call out in a delayed or offset rhythm.  The time lag between calls of the lead frog and others is barely perceptible to human ears but to predators like birds and reptiles the offset vocalization rhythm interferes with the predators ability to assess the location of the calling frogs.

This group defense strategy is referred to by biologists as the 'precedence effect'.  The precedence effect is similar in concept to the double strands of electric fences farmers install around their crops to confuse deer. 

Frog calls can also gently engage our involuntary attention without demanding much cognitive effort. This helps our directed attention—which we use for most cognitive tasks—to relax, allowing for mental restoration. After an afternoon of hectic farm work here, frog background 'music' really does help me refocus from the outdoor problem solving analyses to focus on blogging, writing, doing research or even doing my qigong exercises.

Finally, advertisements (calls) are just a small part of the human/frog relationship.  Xenobots, medicines, infrasounds, frog based cultural practices and understandings of broad ecological concepts are topics for further frog posts.  Today however, simply listening to frog calls offers us humans so much.  We just need to take the time to listen and pay attention.

The above Soundcloud link will take you to a three hour frog call audio clip I recently recorded in the St. Marks National Wildlife Refuge.  The recording is primarily of green tree frogs, pig frogs, Southern cricket frogs, Southern field crickets, mole crickets, cicada and other wildlife.

I love this audio clip for it's extreme chill genre and have been listening to the recorded calls most nights lately.

Hope you enjoy and benefit from the frog calls as much as I do.

American Alligator Vocalizations, Mother and Hatchlings, SMNWR

 Three minutes of early morning female mother alligator vocalization with her juveniles in a shallow primarily freshwater depression type pond near Ring Dike and Cedar Creek east of Stoney Bayou Pool in the St Marks National Wildlife Refuge. 

St Marks National Wildlife Refuge, Alligator Vocalizations, May 2023

May 2023. Sony PCM M10 recorder, Clippy EM272Z1 stereo microphones, windbubbles & drybags. One way I differentiate between male and female adult alligator bellows, besides seeing the alligator, is through spectrogram analysis. Male bellows tend to have more infrasound (usually 16 to 20Hz) components to their bellow than females. I know this gator was a mother because of her interactions with the hatchlings. Carolina wren and Eastern Wood-Pewee calls can be heard in the background as well as Southern Cricket frogs and Green Tree Frogs.

Coyote Pack Calls, 1 a.m. St. Marks National Wildlife Refuge

Coyote Pack Calls, Port Leon Road, SMNWR November 2021 1 a.m.

Coyote Pack Calls link to Soundcloud

Coyote Pack reconciliation calls after a midnight hunt in the St. Marks National Wildlife Refuge. Recorder placed in a mixed hardwood slough in the midst of a wet pine flatwoods. Sony PCM with stereo microphones in dry bags. Waxing moon, light rain. November 2021. The acoustics of the flatwoods are complex. An abundance of water surface creates wave reflection and 'echos' as well as does the fire influenced open midstory under the acres and acres of pines. Note: Coyote calls are usually a signal for the pack to regather or to call juveniles after nighttime excursions and not necessarily to signal a kill.