Geoffrey A Keller
1 May 2002
CaliforniaSan Diego County
- Anza-Borrego Desert State Park
- HHB PORTADAT PDR 1000
- Sennheiser MKH 106
NOTES: "Bird was vocalizing from numerous locations including desert shrub species on a conspicuous location, as well as on the rooftop of nearby picnic shelters."
[All 75 vocalizations here represent the fully peaked form of the Initially Peaked Vocalization (IPV; following Smith, W. J. 1970. Displays and message assortment in Sayornis species. Behaviour 37: 85-112). Note that the BNA account appears to have confused this vocalization with a type 1 Regularly Repeated Vocalization (RR1). Only this recording and LNS #61893 lack completely the Regularly Repeated Vocalizations (RRVs). Quality unchanged (2-1) - 5 April 2005]