ML 7951

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Couch's Kingbird -- Tyrannus couchii More
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Yucatan Poorwill -- Nyctiphrynus yucatanicus

L. Irby Davis
William Guion
28 Mar 1961 at 00:00

    Geography
  • Mexico
    Campeche
    Locality
  • 48.0 km N of HOPELCHEN
    Elevation
  • 90 meters
No locations found with lat/long
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • NAGRA III
    Microphones
  • Electro-Voice 650
    Accessories
  • Parabola 101.6cm (40in)
    Equipment Note

NOTES: General climate: DRY; Cover density: THICK; DENSE BRUSH, SEMI-ARID. ON 10 JUNE 1979 IDENTIFIED AS TYRANNUS COUCHII BY L.I. DAVIS. ON 02 JULY 1979 IDENTIFIED AS TYRANNUS MELANCHOLICUS SATRAPA BY L.I. DAVIS. IDENTIFIED AS T. COUCHII BY T. PARKER APR83 - GB.

[This recording contains three (one in each of the first three parts, the first quite distant) examples of the Regularly Repeated Vocalization (RRV) of Smith (1966. Communication and relationships in the genus Tyrannus. Publ. Nuttall Ornith. Cl. 6), which presumably represent the "Dawn Songs" of BNA. Scattered among the RRVs (at 0:05, 0:15, and 0:35) are what appear to be 15 examples of the "Tzeeeeerrhhh" Call (or Compound Vocalization; CdV). The call at 0:51 appears to instead represent an atypical example of the Incipient Locomotory Hesitance Vocalization (ILHV). Quality changed from 2 to 2, 1-2 - CAM - 22 December 2004]

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