Warbler and sparrow nocturnal flight
calls for the night June 16-17
(refresh browser to see latest daily totals; click on station link
to access historic data)
All stations use the Old Bird 21c microphone. Data are
extracted in real time with Tseep-r software. Click on the station name to access historical data, tentative species
information, and wav files of the flight calls for most nights.
Bill Evans is editor of these data and performs the
initial species classification. Fine tuning of the classification is ongoing and
any updates are
noted in a Readme text file associated with each nightly call archive. In all cases, calls within a
species folder should only be considered candidates for that species or species
group based on
best available evidence.
The flight calls and information available on this
website are intended as a public resource and are licensed as follows:
Attribution-NonCommerical-ShareAlike 3.0 Uniported License.
Any distribution of calls and information should
attribute Old Bird Inc as well as the host and sponsor (if noted) for the source