This is one of the reasons why some males birds have exotic plumes, why elk carry hefty antlers , and why male fiddler crabs have such large claws.

这就是为什么一些雄鸟长着充满异国情调的羽毛，为什么麋鹿拥有巨大的鹿角，为什么雄性招潮蟹有这么大的爪子的原因之一。

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Ants don't carry calendars around with them any more than fiddler crabs possess real wrist watches.

蚂蚁不可能随身携带日历就像招潮蟹不可能带着真正的手表一样。

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The mangroves, together with other plants, as well as fiddler crabs, egrets and planktons, form an integral ecosystem.

这红树林跟其他植物，还有招潮蟹，小白鹭等小生物构成了一个完整的生态系统。

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For a moment I am a kid again, feeling the mud of the Chesapeake between my toes and chasing fiddler crabs down into their holes.

NPR: Environmentalist John Francis, Walking the Walk