Male advertising toots recorded on a north-facing slope in an open forest with Jeffrey pine, incense cedar, white fir, sugar pine, and canyon live oak.

Equipment: Sony PCM-M10 recorder, Sennheiser ME62 microphone, and a Telinga 22 inch parabola hand-held.

Male advertising toots recorded at a range of roughly 10 meters in moderately windy conditions.

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held. Edits: trimmed. No normalization: I had to dial down the gain to avoid saturation.

Male advertising toots recorded at a range of roughly 10 meters in moderately windy conditions.

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held. Edits: trimmed. No normalization: I had to dial down the gain to avoid saturation.

Male advertising toots recorded in windy conditions on a north-facing slope with white fir, sugar pine, Jeffrey pine, and canyon live oak.

I edited out about 20 seconds of the recording in the middle. Then I normalized the file to -3 dB.

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held.

Calls, not toots. Recorded on a north-facing slope in an area with Jeffrey pine, sugar pine, white fir, incense cedar, and canyon live oak.

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held. Audio levels in the two channels were very different. Trimmed and normalized to -3 dB.

No modifications were made to this recording. It is an extract from an overnight recording in a remote mountainous region. Habitat is mixed conifer and deciduous forest intercut with grassland/sagebrush. The bird was not observed.

No modifications were made to this recording. It is an extract from an overnight recording in a remote mountainous region. Habitat is mixed conifer and deciduous forest intercut with grassland/sagebrush. The bird was not observed.

Male advertising toots recorded at a range of about 10 meters while the bird was perched in thick trees (either Jeffrey pine or white fir).

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held. Edits: trimmed and normalized to -3 dB.

Male advertising toots recorded at a range of about 10 meters while the bird was perched in thick trees (either Jeffrey pine or white fir).

Equipment: Sony PCM-M10, Sennheiser ME62, and a Telinga 22 inch parabola hand-held. Edits: trimmed and normalized to -3 dB.

SNR 73 A, converted to MP3 for upload.

Long AEAC call.

Short call, 5-notes.

The same pitch/frequency and interval as the NSWO I submitted on 11-17-23. Possibly the same owl..

Played a skiew call for bird in XC766381, the bird shifted locations and started this alarm call.

Bird immediately started singing its primary song when recording of primary song was played. Habitat was dense grove of Russian Olive Trees

Bird was in a thick stand of Russian Olive trees and is reacting to the playback of an alarm call of a Long-eared Owl

Bird was in a thick stand of Russian Olive trees.

XC710126 is the first recording; this is the second recording; not seen; two birds, one of which would occasionally give a "kew series" (Pieplow; also as 'keek series'), after which the primary bird would immediately switch to very quiet song, gradually building up to loud, e.g., after 1:39, 3:10, 4:23, 7:31, 8:24 (faint; when the primary bird went quieter at other times, it may have heard what I did not record); 9:17 (primary bird changed to excited cadence), 10:16, 12:26, 14:42, 15:03, 16:59 (but ugly mic handling, sorry); over a half hour period, no indication the bird moved, just changed volume; I did not adjust the gain at all; ugly period where I moved 10:42 to 11:02, interval shortened at 11:27; some cosmetic editing in the last 5 minutes I did not keep track of; shortened at 17:26 to remove a partial ann.; shortened at 17:46, chitter at 18:05; also a different call at 0:35 and another rising note at 14:30, species ?;

not seen; Sunny Flat CG; unusual location, but the species was reported here often last spring and bred in South Fork in 2021 (normally expected at 2500m in mixed conifer forest; here found in Madrean woodland of junipers, oaks, and sycamores); interval shortened at 1:08; noisy generator; first of two recordings; interval shortened at 2:00, now away from the generator, but some wind in the canopy; large moon shortly after the last bit of light in the western sky; at 7:03, a second bird can be heard very softly giving a 'keek series" (Pieplow), after which the primary bird immediately changes cadence and lower the volume, which was to happen regularly in the second recording; second recording is XC710127;

Unmodified recording, series of 6 loud "kew" calls recorded at remote (unattended) NFC station on outskirts of Millbrok Ontario.

Unmodified recording, series of 6 loud "kew" calls recorded at remote (unattended) NFC station on outskirts of Millbrok Ontario.