Geoffrey A Keller
21 May 2001
- Hopland Research Experimental Range
- 732 meters
- HHB PORTADAT PDR 1000
- Sennheiser MKH 106
- Roche Parabola 74cm/17.7cm (29.1in/7in)
NOTES: "Bird was vocalizing from shrub..." "The call notes were given by a pair of birds that were foraging on the bare ground about 5meters away. The area contained chapparel on gentle slopes."
BNA: Either the Location Note or the Warning Call is heard (tink note). CZ 03/06/2004.