Hey, all. Here's an instructive 60 seconds of audio from earlier today on the grounds of the National Center for Atmospheric Research in Boulder Co.:
https://macaulaylibrary.org/asset/611273754 Key/legend: 0.2 sec.–several flight calls of *type 5 red crossbills.* 11.8 sec.–call notes of a *pygmy nuthatch.* 40.5 sec.–loud "toop" notes of *type 2 red crossbills* start. 44.2 sec. (and elsewhere)–single call note of a hairy woodpecker. By coincidence, the woodpecker's call, the nuthatch's call, and the crossbill's "toop" are spectrograpically similar, differing primarily in the dominant, or "carrier," frequency. And for something really freaky, have you ever pondered the eerie convergence between the calls of the hairy woodpecker and the red phalarope? I kid you not: https://macaulaylibrary.org/asset/233143. If that were an actual red phalarope in the woods, would you ever know it?? But I digress... 47.2 sec.–flock of type 5 red crossbills starts to take off. 52.2 sec.–small flock of type 2 red crossbills starts to take off. 59.0 sec.–omnipresent pygmy nuthatches still going at it, and if you listen/look real carefully, a single *"Rocky Mtns." white-breasted nuthatch.* But a little birdie tells me it won't be called the white-breasted nuthatch for much longer . . . Other goodies at NCAR this morning: *northern pygmy-owl, eastern bluebird,* and *type 4 evening grosbeak.* Here's the eBird checklist: https://ebird.org/checklist/S154709436 Ted Floyd Lafayette, Boulder Co. -- -- You received this message because you are subscribed to the Google Groups "Colorado Birds" group. To post to this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/cobirds?hl=en?hl=en * All posts should be signed with the poster's full name and city. Include bird species and location in the subject line when appropriate * Join Colorado Field Ornithologists https://cobirds.org/CFO/Membership/ --- 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/CAGk944d8HJws9D3YTx%2B4C2Faq1bvfjyFutfPbQzV%2B-UfM%2BPaUg%40mail.gmail.com.
