Where Did It Go?

Where? I don’t see any butterfly. There’s nothing here but a brown old dead leaf.

Many insect species–and some larger animals, too–are colored to blend into their natural backgrounds and disappear from view. This is one of the best. When endangered, it just closes its wings and disappears. It’s just one more example of what natural selection can do when it has unimaginable lengths of time–many millions of years–to do its work.

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