Thomas G Sander
3 Jun 1992
- H. J. Andrews Experimental Forest; Upper Kink Creek
- NAGRA IV-S
- Sennheiser MKH 40
- Roche Parabola 74cm/17.7cm (29.1in/7in)
NOTES: BNA: Four-note Location Call and Contact Call by male and female. Some baiting with mice was used to bring these birds in. Also, there is some human immitation inbetween bird vocalizations. The birds are always much higher in volume, -MJA, 29 July 2005.