ML 50172

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Black Phoebe (Northern) -- Sayornis nigricans [nigricans Group] More
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Age/Sex
Identification
Solicitation
Behavior
Note

1 Adult Male  

100%

Sight and Sound

 

Natural
 

call

advertise

 

 

Geoffrey A Keller
18 May 1990 at 06:40

    Geography
  • United States
    California
    San Luis Obispo County
    Locality
  • 13.0 km SE of Pozo; Los Padres Nat. Forest; American Canyon Campground,
    Elevation
  • 300 meters
    Habitats
  • Coniferous Forest
  • Deciduous Forest
  • Evergreen Forest
  • Riparian
    Features
  • Canyon
No locations found with lat/long
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • UHER 4200 REPORT MONITOR
    Microphones
  • Sennheiser MKH 106T
    Accessories
  • Roche Parabola 74cm/17.7cm (29.1in/7in)
    Equipment Note

NOTES: dawn +0.67hrs; species cut number 11 BNA: Song Initially Peaked Vocalization ("Tieur"). Simple Vocalization ("Tsip"). mf

[These calls appear to represent both Initially Peaked Vocalizations (IPVs) and Simple Vocalizations given by a pair of birds (see BNA and Smith, W. J. 1970. Song-like displays of Sayornis species. Behaviour 37: 64-84). All calls given before about 0:26 appear to represent IPVs (moslty "chevron-peaked" forms but with "fully humped" forms given at 0:045 and 0:20-0:25). After 0:26, however, things become more confusing because the IPVs of one bird seem to grade into the Simple Vocalizations of the other, indicating either individual variation in Simple Vocalizations or that one of the birds is giving calls intermediate between Simple Vocalizations and IPVs (see Figure 3 of Smith). Quality changed from 1-2 to 2-1 - CAM - 4 April 2005]

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