Paul A Schwartz
15 Sep 1973
- 10.0 km N of Pie De Cuesta; Boraure
- 9.88 -70.23
- 430 meters
- NAGRA UNSPECIFIED IV
- Sennheiser MKH 405
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut # 23. Bulk reel: 23
Natural vocalization. Quality: 2. Level: +3. LN.
This is "whiney" type, siomilar to some I recall from an immature bird at Rio Grande.
More of same after I moved closer. Quality: 1-2. Level: +3. LN.
The bird was then called into view by playback and proved to be an immature plumaged bird of this species.