Great Bittern male song
Booming bitterns
Stand by your Bittern
American Bittern Calling in Magic Hour
Bittern booming
Voices: American Bittern
Bittern
Bittern Calling
"Least Bittern: Life in a Cattail Marsh"
An Unexpected Visitor: A Least Bittern
The American Bittern
Bittern : male booming (dawn) : RSPB Otmoor
Bittern boom
Eurasian bittern birds in the winter reed beds
The American Bittern Call
4464 Bittern at 90mph!!! The Need for Speed!
American Bitterns - NDGNF - 08-18-2020
Great Bittern and Sarus Crane Fight
Least Bittern Vocalizing
Secrets Of Nature - The Bittern (1931)