Two species of pipistrelles were hunting under a cherry tree in a fruit garden in Northern France for about half an hour every evening in early September.  I caught them with my new ultrasonic mics and heterodyned the track at three different frequencies: 20, 42 and 50 kHz for social calls, Pip pip and Pip pyg respectively. You can recognize the Pip pip for its slower pace and the social calls. This is a 3 minute excerpt of the recording.

Headphones recommended.

Tascam DR100 MKIII @192kHz sampling rate. XLR electret ultrasonic mics, stereo AB 15cm. Heterodyned using SoX, mixed in Audacity, upload 16bit/48kHz.

Pipistrelles under a cherry tree - 2022/09/04 - Bayeux, Normandie, France

Recorded with Zoom F3 + Superlux S502, edited in Ableton Live 10. A compilation of few recordings, with one additional layer running throughout the entire piece. It’s my first one, so go easy on me!

Hungover Stroll Through Świerklaniec Park (Sober Me, Not-So-Sober Cousin)

The Raven has many wonderful calls but this one I don't hear very often and it is the first time I have been able to record it.

Huddunge, Uppsala. April 2, 2025.
Zoom F3 + Clippy EM272 as tree ears

Strange call of a Raven

From the Bandcamp EP And you say, "Oh, fine." "Everything's fine.".
https://martinhoogeboom.bandcamp.com/album/and-you-say-oh-fine-everythings-fine
Martin Hoogeboom: guitar/error instruments/lyra-8
Rupert Clervaux: mastering
Farrah Mirzad: artwork


And you say "Oh, fine.

Lost at sea

Dusk at the Heronry - Waterbeach Lake. Easter 2025.  The unique sound of herons 'quacking'.  I understand this to be the 'begging call' of young herons at the nest.  Some distance away - I didn't want to get too close and disturb these birds.  I was setting up an overnight recording rig to capture the following morning's dawn chorus.  "Pammy' the binaural dummy head with a pair of MKH8020 mics to a SD MixPre-6. 24/48kHz.

Dusk at the Heronry

Highlights from a Capercaillie lek with closeup recording of all parts of the male display including infrasound parts as the flutterjumps and the "buzz" (28 Hz).

Uppland. April 17, 2025.
Zoom F3 + AudioTechnica BP4025

Clicks, Trill, Cork, Whetting, Flutterjumps and Infrasound

I put out a droprig close to a nest of a Grey-headed Woodpecker in an aspen close to a small brook. In this recording you can discern a drumming Grey-headed Woodpecker and later on a dusk-singing Blackbird and Robin. And after sunset you will hear two wolves howl in the distance and in the final minutes a calling Great Grey Owl.

Uppland. May 5, 2025.
Zoom F3 + Clippy EM272 as tree ears

ASMR - small brook at dusk with wolves in the distance

This howl took me by surprise. The wolf call I have heard before is when the parents call to their young in August to September. Often the young wolves join the choir in September. This is obviously quite another call. Discussed it with several colleagues knowledgeable about wolves and we came to the conclusion that this is most likely an 'alpha male' doing this to let other packs or wolves in local territory to stay away. This is the time they are having their pups and if they have young nearby the parents are likely on high alert!

Uppland. May 5, 2025.
Tascam FR-AV2 + MikroUsi as tree ears

Wolf howling at dusk

Mediterraneo, Costa Brava, Girona.

Rana Perezi and birds in a pound ms stereo

250517T1300Z FROGS AND BIRDS MS STEREO 2

Ambiente de ribera acompañado del canto de pequeñas aves como el pinzón común (Fringilla coelebs), curruca capirotada (Sylvia atricapilla), verdecillo (Serinus Serinus), petirrojo (Erithacus rubecula), herrerillo común (Cyanistes caeruelus) y alguna más.

Pipistrelles under a cherry tree - 2022/09/04 - Bayeux, Normandie, France

Gerwin Meijer

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