David L Ross, Jr.
26 Mar 1992
- Corcovado National Park; Sirena Field Station
- 8.48025 -83.5893389
- Evergreen Forest
- NAGRA IV-S
- Sennheiser MKH 106
- Roche Parabola 60cm/14.5cm (23.6in/5.7in)
NOTES: (Breeding Status: Territorial; Behav. Context: distress; Sound Delivery Rate: agitated; General Climate: Cyclic Wet-Dry; Season: dry; Cover Den: med)
At the end of the second segment, song changes to agitated sounding calls and chips, interspersed with some song. This occured as another pair of Orange-billed Sparrows arrived-two pairs total.