Paul A Schwartz
25 Jan 1972
- Rio Negro frente a la Isla Cigarron
- 1.75 -67.0
- 100 meters
- NAGRA UNSPECIFIED IV
- Sennheiser MKH 405
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut # 5. Bulk reel: 135
a) Song, after a bit of whistled imitation. Quality: 2. Level: +3. 203 tape.
(This is of the form duidae, of which the females look quite different from those to the north of Cerro Duida and sulch as found at Rio Grande.)
b) ~ 10' later, no further imitation. Quality: 2+. Level: +3. 203 tape.