Not sure if this has ever been recorded before but during the fights between two male cranes I heard them panting and utter almost infrasound growls (80 to 200 Hz). These calls were not made by the wings. Has anyone heard these before?
Huddunge, Uppland. April 9, 2024

AudioTechnica BP4025 + Zoom F3

Near infrasound in Cranes fighting

𝔈𝔵𝔭𝔩𝔬𝔯𝔦𝔫𝔤 ℌ𝔢𝔞𝔯𝔦𝔫𝔤, 𝔱𝔥𝔢 ℌ𝔢𝔞𝔯𝔞𝔟𝔩𝔢, 𝔞𝔫𝔡 𝔱𝔥𝔢 ℌ𝔢𝔞𝔯𝔢𝔯, 𝔞𝔰 𝔞𝔫 𝔈𝔳𝔢𝔫𝔱, 𝔞 𝔐𝔬𝔡𝔢, 𝔞𝔫𝔡 𝔞 𝔇𝔦𝔪𝔢𝔫𝔰𝔦𝔬𝔫 𝔬𝔣 𝔅𝔢𝔦𝔫𝔤.

Field sound recordist and archivist of vanishing sounds in natural Iandscapes. Highly commended in the Sound of the Year Awards 2024 - Best Natural Sound.

Near infrasound in Cranes fighting

Bo Söderström