| Date/time (local) | Occurrence | Latitude | Longitude | Notes |
| 12/21/25 01:16:22 | Possibly detected | 41.9178 | -70.3320 | Several faint upsweeps, 1 labeled |
| 12/21/25 04:16:22 | Possibly detected | 41.9178 | -70.3320 | 1 labeled & 1 unlabeled upsweep |
| 12/21/25 09:16:22 | Detected | 41.9178 | -70.3320 | Several labeled upsweeps separate from humpback patterning |
| 12/21/25 18:16:22 | Detected | 41.9178 | -70.3320 | Faint classified and unclassified upcalls. |
| 12/21/25 19:16:22 | Possibly detected | 41.9178 | -70.3320 | Unclassified upcalls in P5 and 6, and a single call in P10. The calls in P5-6 are short and close together,
could also be HW, or a RW bout? |
| 12/21/25 20:16:22 | Possibly detected | 41.9178 | -70.3320 | Bout of short upcalls, possibly RW or HW. |
| 12/21/25 21:16:22 | Possibly detected | 41.9178 | -70.3320 | Bout of short upcalls in the first half of the period, lots of LF downsweeps which have been observed
previously as part of the HW song pattern, but with more sporadic unclassified upcalls in the last half of
the period that could be RW. |
| 12/21/25 22:16:22 | Possibly detected | 41.9178 | -70.3320 | Unclassified upcalls in P2, could be associated with the LF HW downsweeps later in the period though. |
| 12/21/25 23:16:22 | Possibly detected | 41.9178 | -70.3320 | Classified and unclassified upcalls, starting as a bout earlier in the period and then appearing to get higher
in frequency before turning into LF HW downsweeps in P11. |
| Date/time (local) | Occurrence | Latitude | Longitude | Notes |
| 12/21/25 00:16:22 | Possibly detected | 41.9178 | -70.3320 | |
| 12/21/25 09:16:22 | Detected | 41.9178 | -70.3320 | Several labeled upsweeps separate from humpback patterning |
| 12/21/25 09:31:22 | Detected | 41.9178 | -70.3320 | |
| 12/21/25 11:16:22 | Detected | 41.9178 | -70.3320 | |
| 12/21/25 12:16:22 | Possibly detected | 41.9178 | -70.3320 | |
| 12/21/25 19:16:22 | Possibly detected | 41.9178 | -70.3320 | Unclassified upcalls in P5 and 6, and a single call in P10. The calls in P5-6 are short and close together,
could also be HW, or a RW bout? |
| 12/21/25 20:16:22 | Possibly detected | 41.9178 | -70.3320 | Bout of short upcalls, possibly RW or HW. |
| 12/21/25 21:16:22 | Detected | 41.9178 | -70.3320 | Bout of short upcalls in the first half of the period, lots of LF downsweeps which have been observed
previously as part of the HW song pattern, but with more sporadic unclassified upcalls in the last half of
the period that could be RW. |
| 12/21/25 22:16:22 | Detected | 41.9178 | -70.3320 | Unclassified upcalls in P2, could be associated with the LF HW downsweeps later in the period though. |
| 12/21/25 23:16:22 | Possibly detected | 41.9178 | -70.3320 | Classified and unclassified upcalls, starting as a bout earlier in the period and then appearing to get higher
in frequency before turning into LF HW downsweeps in P11. |
| Date/time (local) | Latitude | Longitude | Notes |
| 12/21/25 01:16:22 | 41.9178 | -70.3320 | Several faint upsweeps, 1 labeled |
| 12/21/25 04:16:22 | 41.9178 | -70.3320 | 1 labeled & 1 unlabeled upsweep |
| 12/21/25 09:16:22 | 41.9178 | -70.3320 | Several labeled upsweeps separate from humpback patterning |
| 12/21/25 17:16:22 | 41.9178 | -70.3320 | Megan stopped here |
| 12/21/25 17:31:22 | 41.9178 | -70.3320 | Julianne started here. |
| 12/21/25 18:16:22 | 41.9178 | -70.3320 | Faint classified and unclassified upcalls. |
| 12/21/25 18:31:22 | 41.9178 | -70.3320 | Possible faint unclassified upcall in P5 but could be noise. |
| 12/21/25 19:16:22 | 41.9178 | -70.3320 | Unclassified upcalls in P5 and 6, and a single call in P10. The calls in P5-6 are short and close together,
could also be HW, or a RW bout? |
| 12/21/25 20:16:22 | 41.9178 | -70.3320 | Bout of short upcalls, possibly RW or HW. |
| 12/21/25 21:16:22 | 41.9178 | -70.3320 | Bout of short upcalls in the first half of the period, lots of LF downsweeps which have been observed
previously as part of the HW song pattern, but with more sporadic unclassified upcalls in the last half of
the period that could be RW. |
| 12/21/25 22:16:22 | 41.9178 | -70.3320 | Unclassified upcalls in P2, could be associated with the LF HW downsweeps later in the period though. |
| 12/21/25 23:16:22 | 41.9178 | -70.3320 | Classified and unclassified upcalls, starting as a bout earlier in the period and then appearing to get higher
in frequency before turning into LF HW downsweeps in P11. |