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

Thomas is referring to the most excellent field guide to bird sounds,

"Field Guide to Bird Sounds of Eastern North America" by local favorite,

Nathan Pieplow. Page 468.

Joe Roller

On Tue, Jun 16, 2020 at 5:01 PM Thomas Heinrich <teheinrich@gmail.com> wrote:

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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