ML 59121

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Barred Forest-Falcon -- Micrastur ruficollis More
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Age/Sex
Identification
Solicitation
Behavior
Note

1 Adult  

 

Natural
Playback Self
 

call

song

dawn song

 

Response to playback: Approach.  

Paul A Schwartz
28 Jan 1969 at 06:25

    Geography
  • Venezuela
    Aragua
    Locality
  • Rancho Grande; Pico De La Toma
    Latitude/Longitude
  • 10.3666667   -67.6833333
    Elevation
  • 500 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 # 37. Bulk reel: 30; Extra cut length: 4:48 Ba) Natural one-note calls (male?). Quality: 2. Level: +5.Bird moved to a different perch but continued the one-note call. (Recording not saved.)Then bird changed position and sang dawn song; then changed position again and continued dawn song; at same time a sescond bird is heard in dawn song. Quality: 2. Level: +5.Then one of these birds moved closer to me and continued singing dawn song. (Not sure which bird but probably the one that was more in focus.) Quality: (1-), 2. Level: +5.Note: These "dawn songs" after playback should be compared with the natural dawn songs of today and yesterday, also Cut 38.b) After playback, one of the two birds has moved in closer. (This sounds as if it may be male.) Quality: 1. Level: +3.Then after more playback. Quality: 1-2 to 1. Level: +10 to +3.Then some time after more playback. Quality: 1-. Level: +3.(Gain raised very high on a few songs near end.)Now after more playback. Quality: 1. Level: +2.Bird was adult, rufous backed; from size it appeared might be female but no proportion scale to permit exact estimate.

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