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 Great Bittern  Botaurus stellaris

Endla järv, Estonia  58º 52' 00.1'' N  26º 12' 41.5'' E   22 May 2010

Deep, low-pitched (c0.15kHz) territorial/advertising booming of a male in extensive reedbeds.

[File name: bittern0522100946ecut] Click here for the MP3 file

RSPB Rainham Marshes, London/Essex, England  51º 29' 36'' N  00º 13' 26'' E   12 April 2026

Deep, low-pitched (c0.15kHz) territorial/advertising calls from the reserve's first ever booming male. Booming in phrases of 3-5 every 20-30 minutes mid-morning. Not really visible on the sonograms due to the amount of background urban/industrial noise plus wind.

[File name: eurasianbitternLS112948ecut] Click here for the MP3 file

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