案例简介：查理·汉密尔顿·詹姆斯 (Charlie Hamilton James) 的照片 @ chamiltonjames/牛羚在肯尼亚马赛马拉保护区的马拉河两岸积聚。在穿越之前，他们紧张地争吵着向河的边缘行进。对于牛羚来说，这是一个危险的时刻-他们面临着来自河岸上的狮子，豹子和鬣狗以及河流本身中的尼罗河鳄鱼的伏击。然而，跟随牛群寻找新鲜放牧的强烈冲动，因为大约有130万只牛羚每年在塞伦盖蒂生态系统中迁徙。因此，在河边过河可能需要几个小时。

案例简介：Photo by Charlie Hamilton James @chamiltonjames / Wildebeest amass along the banks of the Mara River in Kenya's Masai Mara Reserve. They nervously jostle and march toward the edge of the river before making the crossing. It's a dangerous time for the wildebeest—they face ambush from lions, leopards, and hyenas on the banks and from Nile crocodiles in the river itself. Yet the urge to follow the herd in search of fresh graze is strong, as about 1.3 million wildebeest make their annual migration around the Serengeti ecosystem. As a result, crossing at the river can take hours.

国家地理 - Photo by Charlie Hamilton James @chamiltonjames / Wildebeest amass along the banks of the Mara River in Kenya's Masai Mar

案例简介：查理·汉密尔顿·詹姆斯 (Charlie Hamilton James) 的照片 @ chamiltonjames/牛羚在肯尼亚马赛马拉保护区的马拉河两岸积聚。在穿越之前，他们紧张地争吵着向河的边缘行进。对于牛羚来说，这是一个危险的时刻-他们面临着来自河岸上的狮子，豹子和鬣狗以及河流本身中的尼罗河鳄鱼的伏击。然而，跟随牛群寻找新鲜放牧的强烈冲动，因为大约有130万只牛羚每年在塞伦盖蒂生态系统中迁徙。因此，在河边过河可能需要几个小时。

国家地理 - Photo by Charlie Hamilton James @chamiltonjames / Wildebeest amass along the banks of the Mara River in Kenya's Masai Mar

案例简介：Photo by Charlie Hamilton James @chamiltonjames / Wildebeest amass along the banks of the Mara River in Kenya's Masai Mara Reserve. They nervously jostle and march toward the edge of the river before making the crossing. It's a dangerous time for the wildebeest—they face ambush from lions, leopards, and hyenas on the banks and from Nile crocodiles in the river itself. Yet the urge to follow the herd in search of fresh graze is strong, as about 1.3 million wildebeest make their annual migration around the Serengeti ecosystem. As a result, crossing at the river can take hours.

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国家地理 - Photo by Charlie Hamilton James @chamiltonjames / Wildebeest amass along the banks of the Mara River in Kenya's Masai Mar

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