ML 62107

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Black-faced Antthrush -- Formicarius analis More
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Note

 

 

Natural
Playback Self
 

song

 

 

Paul A Schwartz
15 May 1966 at 08:00

    Geography
  • Venezuela
    Locality
  • 0.5 km E of river; Rio Grande; El Palmar
    Latitude/Longitude
  • 7.9666667   -61.8833333
    Elevation
  • 250 meters
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • NAGRA III
    Microphones
  • Electro-Voice 650
    Accessories
  • Parabola 91.4cm (36in)
    Equipment Note

NOTES: Neotropical Institute Cut # 16. Bulk reel: 129
One bird sings in foreground; another is occasionally heard in background. Quality: 1. Level: 0. 7.5 ips.
Then continued @ 15 ips. Quality: 1. Level: 0.
Then after more playback (print-through). Quality: 1. Level: 0. 15 ips.
Then recorded slightly "off focus." Quality: 1. Level: 0.
Then back "on focus" again.
Then voice note re: playback experiment.
Summary of note: Playback of short song from Perija brought no reaction. But neither did playback of the song of Cut 16. Bird probably "habituated" or "tired."
LNS Note: Internal announcements' amplitudes raised without change to song interval - JN

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