About 98 cents of every duck stamp dollar goes directly into the Migratory Bird Conservation Fund to purchase wetlands and wildlife habitat for inclusion into the National Wildlife Refuge System—a fact that ensures this land will be protected and available for all generations to come.

每1美元的鸭票中约有98美分直接转入候鸟保护基金，用于购买湿地和野生动物栖息地，将其纳入国家野生动物保护区系统——这一做法使得土地受到长久的保护。

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The migration of the wildebeest was the "largest remaining migratory system on Earth", they said.

BBC: Scientists urge rethink of Serengeti road plans

"The proposed road could lead to the collapse of the largest remaining migratory system on Earth - a system that drives Tanzania's tourism trade and supports thousands of people, " the appeal said.

BBC: Scientists urge rethink of Serengeti road plans