Arnoud B van den Berg
18 May 1986
- NAGRA III
- Sennheiser ME 20
- Dan Gibson Parabola 45.7cm/11cm (18in/4.3in)
NOTES: (Altitude: 0-10m; Age/Sex: 1-4 Adults, male and female; Breeding Status: Territorial, Breeding; Strata: low flight; Cover Den: Open)
Sounds by several birds in display flight, flying high in the air, sometimes three close behind each other. Also, descending low to the ground while loudly calling.
Fine vari-speed adjustment used on copy, original slightly slow.