Each time a particular kind of bird disappears, at the same time ninety different types of insects, 35 types of plants, and two or three species of fish disappear. And for every two birds that go extinct, one mammal disappears.
每當有一種鳥類絕跡時，同時會有九十種昆蟲、卅五種植物，和兩三種魚類消失；當有兩種鳥絕跡時，同時會有一種哺乳動物消失。