Paul A Schwartz
23 Dec 1973
- Estacion Biologica Rancho Grande
- 10.3666667 -67.6833333
- NAGRA UNSPECIFIED IV
- Sennheiser MKH 405
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut #8. Bulk reel #526
EBRG captive birds.
Time: 11:45 AM to 12:00 M. Song by R. yellow, with L. orange (and also apparently L. green) in background. In last part R. yellow apparently "drops out" and the other two are heard more prominently.
1) Note that R. yellow uses more of the "regular" pattern. It may be there is some element of competition, which brings about such usage.
2) The song of L. green (a female-plumaged bird = young male) is not nearly as well developed in its pattern as are the two "adult" males.