Paul A Schwartz
11 Feb 1972
- 10.0 km San Carlos; frente a la Isla Cigarron of Rio Negro
- 1.75 -67.0
- 100 meters
- NAGRA UNSPECIFIED IV
- Sennheiser MKH 405
- Parabola 91.4cm (36in)
NOTES: Neotropical Institute Cut # 11. LNS Bulk reel: 02
Song by a pair (apparently); one bird sings first (the male?) and is then answered by the other which has different pattern (the female?). Quality: 2. Level: +3. 203 tape.
This pair had sung like this ~2130hr, then again each hour later (recorded), then again @ ~0102, just after I had turned off the recorder when the birds did not sing @~1240 AM in line with the previous pattern.