Tuesday, 16 June 2020

Re: [cobirds] Re: Amazing bird song at Waneka Lake, Boulder County; do you know what it is?

On the other hand, the spectrogram of this recoding does closely resemble, as Joe pointed out, one next to a Red-winged Blackbird in an excellent field guide to bird sounds. ;-)

Thomas Heinrich
Boulder, CO
Nyctea@aol.com

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