Nathan's article has a part 1, where he has recordings of the calls of Winter and Pacific Wren, and says that while at first glance the spectrogram of both recordings looks the same, the loudest part of the Pacific Wren spectrogram (where the vertical black line is thickest) is in the 6 to 7 kHz range, while the spectrogram for the call of the Winter Wren is thicker at half that frequency (meaning that the bird is louder in that lower frequency range). The spectrogram of the recordings that I obtained yesterday appear to me to match Nathan's spectrogram of Pacific Wren: http://earbirding.com/blog/archives/774 vs https://ebird.org/checklist/S129533131 Thomas Geza Miko Claremont, LA County 909.241.3300 "With a sufficiently large sample size a correlation can at once be both very significant and too small worth discussing."--Daniel Kahneman toggle quoted message Show quoted text |
v1.35 - 11/22/22 - Finally rewrote code to handle new Groups.IO web structure v1.30 - 01/05/16 - Revamped cloud logic, optimized database queries, linked to eBird rarities. v1.23 - 12/08/11 - Added direct link to CBRC records. v1.22 - 12/03/11 - Corrected GMT offsets on dates. Added last 5 posts at top. v1.21 - 11/24/11 - Added direct link to range map for NA birds. v1.2 - 11/23/11 - Greatly improved graphing technology - separates month vs. year by posts. Added species auto-complete functionality. v1.14 - 11/22/11 - Added cloud bubble for common thread topics. v1.13 - 11/22/11 - Added integrated photos where available. v1.12 - 11/22/11 - Added multiple input boxes for additional refinement, negative search criteria (eg. -keyword). v1.11 - 11/22/11 - Added banding code, species look-up. Also direct link to recent eBird observations. v1.1 - 11/22/11 - Added 'date' functionality. Shows top 'month/year' combinations for a query. Restrict results to that 'month/year'. v1.0 - 11/21/11 - Initial version coded. Currently archiving 'lacobirds' and 'calbirds'.