. Bulletin of the British Ornithologists' Club. Birds. Niels Krabbe et al. 98 Bull 2005 125(2). Time (sec) Figure 4. Relative volume of song of paratype ICN 34845 of S. rodriguezi during a bout of five songs (recordist Niels Krabbe). Sonogram prepared using CoolEditPro (Syntrillium Software). seconds. Each phrase is usually initiated with a slightly lower pitched, prolonged note (Fig. 5a). Song in response to playback is remarkably similar to that under natural conditions, showing little or no change in quality, pace, pitch and phrase length, and differs only in the briefer pauses, incr
. Bulletin of the British Ornithologists' Club. Birds. Niels Krabbe et al. 98 Bull 2005 125(2). Time (sec) Figure 4. Relative volume of song of paratype ICN 34845 of S. rodriguezi during a bout of five songs (recordist Niels Krabbe). Sonogram prepared using CoolEditPro (Syntrillium Software). seconds. Each phrase is usually initiated with a slightly lower pitched, prolonged note (Fig. 5a). Song in response to playback is remarkably similar to that under natural conditions, showing little or no change in quality, pace, pitch and phrase length, and differs only in the briefer pauses, increased volume and, sometimes, in a more accentuated introductory note. Both the fastest and slowest songs recorded ( and notes/s) were given under natural conditions. In six of eight songs recorded from different individuals, song notes are up/down-strokes. In two they are only down-strokes. The up-stroke and peak is a fundamental note loudest around 3 kHz (Fig. 5a,c). The long down-stroke creates a first overtone at kHz, which in seven birds is somewhat louder than the fundamental, but in one bird is weaker (Fig. 5b). The pitch and pace recall those in A 0 2 - .- i ~ S \â \ V V N s s \ B 0 2 '-- i 11 "C Time (sec) Figure 5. Songs of males of S. rodriguezi. A: paratype (ICN 34845), including the introductory note of the song. B: Paratype (ICN 35234). C: Holotype. Sonograms produced using 1024 frequency bands and CoolEditPro (Syntrillium Software).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Ornithologists' Club. London : The Club
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1893
