A Brown-headed Cowbird makes a call that can sound like this. Burke Angstman Lakewood
On Thursday, June 18, 2020 at 7:22:39 PM UTC-6, Ted Floyd wrote: > > Hey, folks. Alrighty, that last one was fun, er, "fun." > > Here's a new one: > > https://macaulaylibrary.org/asset/244160651 > > And another cut from the same bird: > > https://macaulaylibrary.org/asset/244160711 > > You can hear several species in those two cuts, but the one I'm talking > about is the slowly and rather steadily repeated whistle, falling in pitch > a bit and wavering, uttered every 2-3 seconds. The bird vocalized like this > for at least a minute at a time for much of the morning. Audio-recorded > (and seen, so I know what it is) near the intersection of Lefthand Canyon > Drive and Old Stage Road in Boulder County, yesterday, Wed., June 17. > > Any takers? > > Enjoy! > > Ted Floyd > Lafayette, Boulder County > -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/cobirds/e24e0c4a-7dd6-46f2-b452-fd69386c6579o%40googlegroups.com.
