ML368843111
作者
日期
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- 年龄
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- 性别
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媒体文件注释
First of three birds that were feeding is an unusual manner: the bill was held at a shallow angle, half-submerged, and the bill tips were vibrated or trembled such that bubbles and droplets of water emanated from around the submerged part of the bill. On a few occasions the birds then struck close to where they had been "bubbling", but I did not see them catch any prey. The three birds fed in this manner the entire time we were present.
观察细节
Three of the nearer birds were feeding is an unusual manner: the bill was held at a shallow angle, half-submerged, and the bill tips were vibrated or trembled such that bubbles and droplets of water emanated from around the submerged part of the bill. On a few occasions the birds then struck close to where they had been "bubbling", but I did not see them catch any prey. The three birds fed in this manner the entire time we were present.
技术信息
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- 原始文件大小
- 44.53 MB