kHz
作者
Walter A. Thurber 该用户提供的媒体文件
日期
08:00
地点
Hacienda Los Pinos
Usulután, El Salvador
该地点产生的媒体文件 配图名录- 年龄和性别
- 幼鸟,性别未知 - 1
- 行为
- 求偶、炫耀或交配
- 发声
- 鸣叫
- 回放
- 未说明
媒体文件注释
NOTES: WELL-FED, AGGRESSIVE NESTLING AT BASE OF TREE WHERE NEST FALLEN. WHEN BIRD WAS APPROACHED IT ABANDONED ITS CONCEALMENT POSE AND ADOPTED A THREAT POSTURE - MOUTH OPEN, WINGS SPREAD, CROWN ERECT. IT BEGAN TO SCREAM WHEN I REACHED OUT MY HAND A RASPY SCREAM USUALLY, BUT NOT ALWAYS, PRECEEDED BY A WHISTLE. THE SCREAM WAS PRODUCED DURING EXHALATION; THE WHISTLE MAY HAVE BEEN INHALATION. THIS SCREAM-WHISTLE VOCALIZATION IS HEARD UNDER OTHER CONDITIONS WHEN THERE IS NO THREAT OR FRIGHT BNA: These "screams" probably represent renditions of the "eee-grack" call (sensu BNA) given by a nestling in response to a perceived threat. [CAM - 23 February 2005]. Other Behaviors: Perform Visual Display, Emit Alarm. Habitat: River.
技术信息
- 录音机
- UHER 4000L
- 话筒
- 附件
- Parabola 45.7cm (18in)
存档信息
- 已数字化
- 6 May 2002 - Shelagh A. Smith