Thomas G Sander
12 May 1990
- Round Barn
No locations found with lat/long
- NAGRA IV-S
- Sennheiser MKH 40
- Roche Parabola 74cm/17.7cm (29.1in/7in)
NOTES: (AOU #921. NM: Y.) Hundreds of swallows; sounds a bit chaotic? At this place and time of year the first light to creep over horizon = 04:30.