ML 61982

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White-fringed Antwren (Southern) -- Formicivora grisea [grisea Group] More
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Age/Sex
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Behavior
Note

 

100%

Sight and Sound

 

Natural
Playback Self
 

call

song

 

 

Paul A Schwartz
4 Mar 1972 at 07:00

    Geography
  • Venezuela
    Amazonas
    Locality
  • San Carlos de Rio Negro
    Latitude/Longitude
  • 1.9166667   -67.0666667
    Elevation
  • 100 meters
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • NAGRA UNSPECIFIED IV
    Microphones
  • Sennheiser MKH 405
    Accessories
  • Parabola 91.4cm (36in)
    Equipment Note

NOTES: LNS Note: Unbroken cut with internal recordist announcement gain change.. Neotropical Institute Cut # 17. Bulk reel: 119. 203 tape. "Song" by male (natural). May be homologous to the "kerrick" or "cher-lik" calls of the northern form, but cf. later recordings. Quality: 2-. Level: +3. 7.5 ips. Continuation of above (~ 2"). Then some calls of same bird after playback. Quality: 2. Level: +3. 3.75 ips. "Song" by female - apparently homologous to "di-di-di" type of c[word unfinished; recordist presumably meant to write "call"].Quality: 2-3. Level: +3. 3.75 ips. Then still different calls by female (which may also be homologous to "kerrick," but different from the other. Quality: 2. Level: +3. Then after more playback, birds are more excited. "Di-di-di" calls. Quality:1-2. Level: +3. 3.75 ips. Male is in focus in most, but at times female heard in background. Note: In view of the different nature of the vocalizations and the considerable difference in external morphology (plumage color) of the females, it is possible that rufiventris is a different species. The area around and between Cano Catanaiapo (from where Phelps list F.g. orenocensis) and Sanariapo (from where they list rufiventris) should be checked for morphological and vocal interpretation, or lack of it.

ML: Subject changed from recordist's original identification of Formicivora grisea rufiventris to Formicivora grisea [grisea Group] to conform to eBird Taxonomy (v. 1.55). -Jay McGowan/Matt Medler, July 2015.

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