Name: Biosonora Fossato callo_2 by Biosonora
Duration: 4 min 53 s
Description: Field recording at Fossato Callo (Viterbo, Tuscia, Italy) hot water spring in a geothermal and Roman archaeological site 42.33192 12.06463

Field recording at Fossato Callo (Viterbo, Tuscia, Italy) hot water spring in a geothermal and Roman archaeological site 42.33192 12.06463

Biosonora Fossato callo_2

Wicked Owls - Midnight Primeval Beech Forest, Slovenia October 4. 2025

Thunderstorm in heavy rain, some limiting on it due to levels. Testing out DIY rain cover. ORTF. 

Thunderstorm and Heavy Rain

Late autumn at the Adishi glacier.

Capturing the clean and quality sound of the glacier presents its unique challenges to overcome. One is the logistics and fitness of even reaching such a place, as they are mostly in high, remote mountains. Another is reaching the suitable area of the glacier, which is huge and presents a very demanding terrain that takes you time and energy to get to. Most easy access is at the front of it, the tounge where the ice ends, yet that is where the water comes running out of under the glacier. So in order to avoid the noise of the rushing water, I needed to reach a more upper stage of it, by following it along the edge. That presents another difficulty as the edges of a mountain are "eaten" by the glacier therefor they are completely crumbling and unstable with a high chance of collapse. You can hear stones falling down continuously. When finally reaching this narrow edge, I managed to come closer to the heart of this ice monster. This is where I was able to capture the ice avalanches and rock falls from much closer and farther away from the noise of the river. You can feel the vibrations and low rumble frequencies. Standing so close to it and witnessing its process is very different from anything else; it somehow feels like something extraterrestrial, something we are never used to witnessing in our lives. Yet it is a whole complex system by itself, existing there, doing its thing, basically just water.

Adishi Glacier / Avalanche - Georgia, Caucasus 2500m

Red Deer Coughing

This year's best of is divided in two parts: forest and lake/wetland! In this recording you will hear in turn:

MARCH
Tawny Owl
Raven
APRIL
Common Crane
Capercaillie lek + female
MAY
Grey-headed Woodpecker
Bumblebee
Willow Warbler
Dunnock
Mistle Thrush
Whinchat
JUNE
Nightjar
JULY
Red-backed Shrike

All recordings from the county of Uppland with varying recording techniques.

Best of 2025 forest

This year's best of is divided in two parts: forest and lake/wetland! In this recording you will hear in turn:

APRIL
Slavonian Grebe
Red-necked Grebe
Lapwing
MAY
Sedge Warbler
Whooper Swan
Penduline Tit
JUNE
Bittern
Great Reed Warbler
Curlew
Fire-bellied Toad
JULY
Starlings murmuration

All recordings except the Fire-bellied Toads from the county of Uppland with varying recording techniques.

Best of 2025 wetland and lake

Recording of white storks from 2022. Forgot about this track - recorded in Slowinski National Park. 

White Stork Nest - Summer 2022

Tawny Owl Pair, Forest Clearing.

Walking through a forest or standing in a valley represents an important moment for collecting highly valuable ambient sounds. The settings for making field recordings are extremely varied and encompass the soundscapes where plants and trees live: the flowing of a stream, the croaking of frogs, a field of poppies filled with cicadas in summer, the sound of a forest with rustling leaves, birdsong, ocean waves, or the passing wind... In short, nature provides us with an immense wealth of sounds that can be recorded using small portable recorders equipped with highly sensitive microphones.

At Biosonora, an archive of field recordings is being created, drawn from a wide range of natural environments. These sounds can have many uses beyond simple archiving: they can, for example, serve as the natural background for musical performances involving bioacoustics, or—through complex processing—become key elements in the creation of natural drones.

Biosonora Fossato callo_2

Biosonora

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