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7 results for “Passerculus sandwichensis”
Figure 5 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
Figure 5. Sonograms of songs of four male Savannah Sparrows Passerculus sandwichensis wetmorei in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) 5 June 2016 (Knut Eisermann, XC333471), including waveform, (b) 5 June 2016 (Knut Eisermann, XC333471), (c) 3 June 2016 (Knut Eisermann, XC333472), (d) 3 June 2016 (Knut Eisermann, XC333473). DW = descendent whistle. See Table 1 for signal measurements of marked notes.
Figure 4 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
Figure 4. (1) Approximate breeding range of Savannah Sparrow Passerculus sandwichensis in Mexico (sensu Howell & Webb 1995); (2) summer records in the Sierra Los Cuchumatanes, Guatemala, including recent nesting and other summer records (June–July 2016), and historic summer records (June 1897, van Rossem 1938); and (3) summer record from Sierra Madre range in June 2002 (J. Berry in Eisermann & Avendaño 2007). Chis. = Chiapas, Mexico, GT = Guatemala, HN = Honduras, SV = El Salvador. Inset map shows location of summer records of Savannah Sparrow in the Sierra Los Cuchumatanes (SLC) and Sierra Madre (SM) ranges in Guatemala.
Figure 3 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
Figure 3. Nesting evidence of Savannah Sparrow Passerculus sandwichensis wetmorei in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) nest with a single nestling, 2 July 2016 (a second nestling was found dead 20 cm from the nest); (b) recently fledged juvenile, barely able to fly, 3 July 2016, (c–d) two fledglings well able to fly, tail c.40% grown, 3 July 2016; (e) dependent juvenile with tail c.80% grown, 3 July 2016; and (f) immature, 27 August 2016 (Knut Eisermann)
Figure 2 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
Figure 2. Different adult Savannah Sparrows Passerculus sandwichensis wetmorei of a breeding population in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala: (a) lateral; (b) dorsal, 5 June 2016; and (c) frontal view showing the neatly marked median crown-stripe, 2 July 2016 (Knut Eisermann)
Figure 1 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
Figure 1. Habitat of a breeding population of Savannah Sparrow Passerculus sandwichensis wetmorei at 3,700 m in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala, 5 June 2016; the undulating landscape, shaped by glaciers during the late Quaternary, is currently covered with grassland dominated by Muhlenbergia quadridentata (Poaceae) (Knut Eisermann)
Data from: Environmental conditions and individual characteristics influence movement patterns of juvenile Passerculus sandwichensis (Savannah sparrow) throughout the post-fledging period
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TABLE 1 in Nesting evidence, density and vocalisations in a resident population of Savannah Sparrow Passerculus sandwichensis wetmorei in Guatemala
<p>TABLE 1 Mean (± SD) and range of signal characteristics of songs of breeding Savannah Sparrows <i>Passerculus sandwichensis wetmorei</i> in PRM Todos Santos Cuchumatán, dpto. Huehuetenango, Guatemala, in June 2016, <i>n</i> = 37 songs of four males.</p><table><thead><tr><th><b>Song section (see Fig. 5)</b></th><th><b>Duration (seconds)</b></th><th><b>Peak frequency (kHz)</b></th></tr></thead><tbody><tr><th>Entire song (<i>n</i> = 37)</th><td>2.5 ± 0.3 (2.1–3.1)</td><td></td></tr><tr><th>Introduction:</th><td></td><td></td></tr><tr><th><i>Chip</i> note (<i>n</i> = 97)</th><td>0.06 ± 0.01 (0.04–0.12)</td><td>7.906 ± 202 (6.938 –8.250)</td></tr><tr><th>Middle section:</th><td></td><td></td></tr><tr><th>Descending whistle (DW1) (<i>n</i> = 37)</th><td>0.10 ± 0.01 (0.08–0.11)</td><td>6.927 ± 132 (6.750 –7.125)</td></tr><tr><th>Trill (n = 37)</th><td>0.05 ± 0.01 (0.03–0.06)</td><td>6.471 ± 1.268 (4.125 –7.500)</td></tr><tr><th>Double <i>ch</i> note (<i>n</i> = 37)</th><td>0.08 ± 0.004 (0.07–0.10)</td><td>5.063 ± 378 (3.188 –5.625)</td></tr><tr><th>Dominant section:</th><td></td><td></td></tr><tr><th>Buzz (<i>n</i> = 37)</th><td>0.60 ± 0.06 (0.5–0.8)</td><td>6.456 ± 646 (4.688 –6.938)</td></tr><tr><th>Terminal section:</th><td></td><td></td></tr><tr><th>Descending whistle (DW2) (<i>n</i> = 37)</th><td>0.08 ± 0.005 (0.07–0.09)</td><td>7.566 ± 222 (7.313 –8.063)</td></tr><tr><th>Trill-whistle (n = 37)</th><td>0.29 ± 0.07 (0.16 – 0.39)</td><td>4.074 ± 355 (3.375 –4.313)</td></tr></tbody></table>
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