ML120202
作者
日期
地点
- 年龄
- 未说明
- 性别
- 未说明
- 发声
- 黎明鸣唱; 鸣唱
- 回放
- 未说明
媒体文件注释
NOTES: "Bird was vocalizing from gutter of apartment building [adjacent to national wildlife refuge]..." [This is the Primary Song of the species (sensu BNA) combining the fully peaked form of the Initially Peaked Vocalization (IPV) with type 1 and type 2 Regularly Repeated Vocalizations (RR1s, RR2s). See Figure 1c of Smith (1970a. Song-like displays in Sayornis species. Behaviour 37:64-84) for RRVs and Figure 1 of Smith (1970b. Displays and message assortment in Sayornis species. Behaviour 37: 85-112) for IPVs. Note that the BNA account appears to have confused the IPVs with RR1s and the RR1s with RR2s. Somewhat atypical of the species (fide BNA following Smith), these vocalizations are not strongly biased towards IPVs, with nearly one-third of the songs representing RRVs (62 of 174 vocalizations). In the latter part of the recording (2:30-4:12), the bird alternates between the two at a roughly 2:1 ratio of IPV to RRV. There appear to be 22 RR1s (0:08, 0:30, 0:58...) and 40 RR2 (0:06, 0:14, 0:20...), but it is difficult to be certain due to the songs of other birds. Quality changed from 1-2 to 2-3, 2-1 (Carpodacus mexicanus singing throughout the first half of thie recording makes the songs of Sayornis almost unrecognizeable - BEST after 2:30) - 5 April 2005].
技术信息
- 录音机
- HHB PORTADAT PDR 1000
- 话筒
- Sennheiser MKH 106
- 附件
存档信息
- 已编目
- 15 Mar 2004 - Martha Fischer
- 已数字化
- 15 Mar 2004 - Martha Fischer
- 已编辑
- 15 Mar 2004 - Martha Fischer