作者
日期
地点
- 年龄和性别
- 成年雄鸟 - 1
- 行为
- 觅食或者进食
- 发声
- 鸣叫; 鸣唱
- 回放
- 未使用回放
媒体文件注释
Spontaneous song and a few soft calls by a Crescent-chested Warbler recorded at 7:14 am by Curtis A. Marantz on 24 May 2020 along the Morse Canyon trail, Coronado National Forest, Cochise County, Arizona. When recorded, the warbler was seen moving, but only as a small bird, about 20-25 meters away and about 15-20 meters (two-thirds) up in conifers in the bottom of a relatively narrow, steep-walled canyon with rocky slopes about 200 meters above the trailhead at the end of the road (the same area where previous recordings were made). The sun was now in the treetops. There was a full, dense overcast, calm conditions, temperatures in the upper 50s to low 60s, and now starting to get dark. Attenuators turned off but low-cut filters used on both microphone and recorder.
观察细节
(singing and calling; we encountered one pair near the trailhead where others had seen a nest predated the previous morning, but also the same, or seemingly more likely, a second pair about 200 meters up the trail in the narrower part of the canyon; birds were repeatedly seen in both places, but never moving between the two, and when followed, they tended not to move all that far despite their very active behavior; I suspect we saw two pairs, but I cannot really be certain about this)
额外物种
技术信息
- 录音机
- Nagra ARES-BB+
- 话筒
- Sennheiser MKH-20
- 附件
- Roché 30” fiberglass parabola
- 原始文件大小
- 21.67 MB