ML 74615

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Rodrigues Warbler -- Acrocephalus rodericanus More
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Age/Sex
Identification
Solicitation
Behavior
Note

 

100%

Sight and Sound

 

 

 

 

Jennifer F. M. Horne
8 Nov 1974 at 00:00

    Geography
  • Mauritius
    Rodrigues Island
    Locality
  • 574.0 km E of Mauritius Island; Cascade Pigeon; Rodrigues
    Latitude/Longitude
  • -19.6833333   63.4166667
    Elevation
  • 316 meters
    Channels
  • Mono
    Sampling Rate
    Bit Depth
    Recorders
  • NAGRA III-B
    Microphones
    Accessories
    Equipment Note

NOTES: CAT NO. 74615 PARTS A & B: Time: 0515/0645. Date: 9 Nov. 1974. Identified by sight and sound. Confidence in ID: 100%. Recordist's Tape #78A/B. Bkground Sounds: Acridotheres tristis, loud on occasions; Geopelia striata; Pteropus rodricensis, Culicidae sp., Insectivora spp., Foudia madagascariensis. No. of Animals/Sex: adult(s), male(s), female(s). Range Status: Normal, Highly endangered. Breeding Status: Territorial paired, breeding. Sound Category: Song, call. Field Recorder: Nagra IIIB. Cut length: Part A - 5:32, Part B - 12:00.) HPF 220 Hz. Field annotations included. The singing males sang from "high points" but they would forage with a second bird female? (likely) and then when they were high would sing. I I could not see them then the lowest bird was one I was focused on and this would not be the singer (9 times out of 10 = Murphy's rule!). But the pair calls were clear! Part B annotation is clear regarding the two birds foraging one singing (male) one not (female) with soft calls-- [sic]
CAT NO 74615, PART C: Time 0645. Date: 9 Nov 1974. Identified by sight and sound. Confidence in ID: 100%. Recordist's Tape #78B/79A. No. of Animals/Sex: adult(s), male(s), female(s). Range Status: Normal, Highly endangered. Breeding Status: Territorial paired, breeding. Sound Category: Song, call. Field Recorder: Nagra IIIB. Cut length: 11:29. HPF 220 Hz. Field lannotations included (0645). Playback of songs of "same sp" were used with care--the calls not songs were what I was hoping for! At the end they did call. The "tek" or "je-je-jit" call is heard distantly.
CAT NO 74615, PART D: Date: 9 Nov 1974. Identified by sight and sound. Confidence in ID: 100%. Recordist's Tape #79A. No. of Animals/Sex: adult(s), male(s), female(s). Range Status: Normal, Highly endangered. Breeding Status: Territorial paired, breeding. Sound Category: Song, call. Field Recorder: Nagra IIIB. Cut length: 0451. Field annotations are included. We have lifted the level on the "zee-zit" (ze ze zit) calls (the Fruit Bats can be heard in the background). Then there is a second series of that call. (We have tried to exclude the Fruit Bats from the copy.At the end the "ze ze zit" is heard clearly. There is an amount of "loud fanning" display in response to playback. (0830 ended recording) at 0800 the nest which we checked had an incubating bird in it. 0830 ends recordings in this Island.

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