Thank you for applying your model to some of Orcasound's open audio data.
The whistles in question are calls made by a local bird, the Pigeon Guillemot. You can compare your recording to the McCauley Library recordings Pigeon Guillemot song and calls from AK and WA
I only know this because many times in the past few years, these calls have fooled the OrcaHello model (SRKW call binary classifier)! You can hear many "false positives" by loading the OrcaHello Dashboard (filtered for all time, not just the latest month) and then searching the tag field for "Pigeon Guillemot." Here is one good example of WA guillemot calls from April (close to the time of year when your model detected them, i.e. May).
This is the time of year when the birds next underneath piers and wharfs around Puget Sound (the also nest in burrows within sandy bluffs). The fledglings can be quite noisy, especially when an adult returns with food! And Orcasound hydrophones are so shallow that we often pick up bird noises that propogate from air to water and then to the hydrophone, especially when the tidal height is low. (In fact, some of our hydrophones become microphones at the lowest tides of the year!)
Keep up the great work. I'm looking forward to a day when models like yours listen (together with humans?) to live audio streams from nature and can let us know when a marine bird is present, rather than just an endangered killer whale.
Scott (in Seattle)
