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One of four Northern Saw-whet Owls along Flagstaff Road, fairly near the summit.

Birds reacting to a skiew call of a Boreal Owl I played. It was the only skiew I had to play

Various calls in response to playback. This is the third consecutive winter that I've found this species in this area; to date, I have not found evidence that they nest at this elevation in these mountains. Identified as a male by its advertising toots, although those don't appear on every recording in this sequence.

Habitat: east-west canyon with thick forest on the north facing slopes and thick chaparral on the south facing slopes. The bird was in the forest, which consists of California bay, canyon live oak, madrone, bigleaf maple, and bigcone Douglas-fir.

Equipment: Sony PCM-M10 and a Sennheiser ME67.

Bird unseen in pines in campground responding to playback of tooting calls. possibly the same bird as XC450313

Bird unseen in pines in campground responding to playback of tooting calls

Male advertising toots. Recorded on an east-facing slope in an area with canyon live oak, bigcone Douglas-fir, and small numbers of sugar pine and California bay. Recorded at a range of about 15 meters while the bird was in a canyon live oak.

Equipment: Sony PCM-M10 recorder and a Sennheiser ME67 microphone. Edits: trimmed and normalized to -3 dB.

Male advertising toots. Recorded on an east-facing slope in an area with canyon live oak, bigcone Douglas-fir, and small numbers of sugar pine and California bay. Recorded at a range of about 15 meters while the bird was in a canyon live oak.

Equipment: Sony PCM-M10 recorder and a Sennheiser MKE-400 microphone. Edits: trimmed and normalized to -3 dB.

Single bird from a larger group of about 6-8 birds calling around me at this point. Habitat would be lake on one side with steep slope with conifers bordering it, steep slope with conifers on my other side and a narrower valley with conifers and the lake around it. Birds were on both slopes as well as up and down the valley. There's a few faint skew calls starting at 3:04

Spontaneous toots on a north-facing slope with Jeffrey pine, sugar pine, white fir, and incense cedar. Recorded at a range of about 20 meters.

Equipment: Sony PCM-M10 recorder, Sennheiser ME62 microphone, and a Telinga 0.56 m parabola. Edits to the file: trimmed slightly and normalized to -3 dB.

Loud "whining" calls, also called "screams" by some authors. Recorded at a range of about 5 meters while the bird was perched in a canyon live oak.

Equipment: Sony PCM-M10 recorder and a Sennheiser ME67 microphone. Edits: trimmed and normalized to -3 dB.

Recorded on a north-facing slope with an open forest of Jeffrey pine, sugar pine, white fir, and incense cedar. There are also white alders and canyon live oaks in the area. The bird was perched in a Jeffrey pine at a range of about 30-40 meters.

Equipment: Sony PCM-M10 recorder, Sennheiser ME62 microphone, and a Telinga 22 inch parabola. Edits to the file: normalized to -3 dB.

one of 4 owls that started singing about an hour before dawn, they sang for 15 minutes and then all stopped.

Only 70%< sure on this one, it was recorded in the same location where there were also Boreal Owls. My friend who's heard both Boreals as well as Northern Saw-Whets many times felt this was definitely a Northern Saw-Whet.

Recording cropped, amplified slightly and high-pass filter added to reduce noise. 2 Birds in dense, wooded wetland with significant shrubby understory. First bird responded to playback with fall vocalizations which seemed to get a second bird to call with the whine/wail call.

One descending wail heard in response to playback of "fall sounds" for this species from the Voices of North American Owls CD. Recorded near the crest of a north-facing slope with abundant California black oak. Nearby trees somewhat farther down the slope include Coulter pine, bigcone Douglas-fir, gray pine, and canyon live oak. This was the only sound the bird made for a few minutes.

Conditions nearby were windy, which produced loud background noise, but it was relatively calm where I was standing.

Equipment: Sony PCM-M10 recorder, Sennheiser ME62 microphone, and a Telinga 22 inch parabola. Edits to the file: trimmed at both ends.

Heard in response to playback of winter and fall sounds from the "Voices of North American Owls" CD. The bird was in a dead bush at a range of about 10 meters.

Unusual location for this species: the elevation is very low and the habitat is a broad, wooded canyon with coast live oaks, sycamores, Mexican elderberry, non-native trees (pines and eucalyptus), and chaparral.

Equipment: Sony PCM-M10 recorder equipped with a Sennheiser MKE-400 microphone. Modifcations to the file: cropped.

Song in response to brief playback; one other individual likely present, not recorded. This is trimmed from a longer recording that was unexpectedly interrupted by a very-early-morning jogger; this is the longest single piece I could salvage. The bird sang nearly continuously for about 3 minutes, not all of which was recorded. Habitat: mixed forest of hemlock, cedar, and maple trees. The bird sounded relatively low to the ground while singing. Weather: clear, with temperatures in the low 20s F. Recording is amplified, and equipment noise reduction applied.

Agitation whines.

Recorded in an area with Coulter pine, incense cedar, canyon live oak, sycamore, chaparral, and some non-native trees.

Equipment: Olympus LS-10S and a Sennheiser MKE-400 microphone. Modifications to the file: cropped.

Recorded by Songmeter Automated Recording Unit at Flo7

Calling from juniper.

A Northern Saw-whet Owl at the Medano-Zapata Ranch is interrupted by a Western Screech-Owl. A different vocalization, given by presumably the same Northern Saw-whet Owl, can be heard here: http://www.xeno-canto.org/225336.

Recording trimmed and amplified by 5. After I heard the bird in XC207358, I played a few recordings of saw-whet song and cries, and this bird responded with a cry and then a long run of song.

Natural vocalization from a bird in ponderosa forest.

Response to whistled immitation. The bird swooped in and landed low in a Ponderosa Pine.

Delayed (3 min) response to playback of male advertising song. Owl was photographed. Owl flew in close (3 m), sat quietly, then began crying call afterwards. The owl was 5 m above me during this recording. Sound tracks were silenced (to remove very slight background noise) in spaces between the calls. The periodicity of the calls remain as recorded, note the regular call frequency followed by a longer delay before last call. This owl continued this call for ~15 minutes and could be heard from 300 meters. The owl first approached with the classic NSWO scream call, then flew in very close and sat quietly, then flew up to top of tree and began the calls recorded here.

Photo: http://mackerrow.zenfolio.com/p886033858/h4f67e760#h4f67e760

Two saw-whets were vocalizing during this recording.

Chitters, whines, and harsh shrieks. Two birds were calling simultaneously from distinctly different directions. The birds were in a large pocket of vegetation (mostly live oaks and big cone Douglas Firs) surrounded by an area that burned extensively during the Station Fire in 2009.