斑马雀的飞行策略
鸟群中的所有鸟儿如何知道飞向哪里？许多鸟类都是成群结队地飞行，以安全地完成长距离的飞行。斑马雀用眼神向它们的同族展示方向的变化。就在转向之前，它们会将头转向大约 90 度。 作者：zdf/Terra X/Jochen Rall/Daniela Busch/Maximilian Mohr 翻译和配音：alugha 点击这里观看更多视频：https://alugha.com/TerraX
LicenseCreative Commons Attribution
More videos by this producer
Formation of the Baltic Sea
20,000 years ago, the Baltic Sea region was still covered by a glacier. A change in climate caused the glacial ice to melt. The first form of the Baltic Sea emerged: a freshwater lake. Today, despite its connection to the North Sea, it is considered an inland sea. Author: ZDF/Terra X/Nina Zorn/Anna
