What does “picnic area" mean here？
From a random reading,

But eight different species of chipmunks'scurrying around a "picnic area" will not be found.

What does “picnic area" mean here？ a shared feeding ground?

Adding the context

There are eight chipmunk species in the Sierra Nevada mountain range, and most of them look pretty much alike. But eight different species of chipmunks’ scurrying around a picnic area will not be found. Nowhere in the Sierra do all eight species occur together. Each species tends strongly to occupy a specific habitat type, within an elevational range, and the overlap among them is minimal.

Perhaps, I am overthinking it. However, the arrangement of the sentences make me think that the phrase "picnic area" means it more.

Question

What does “picnic area" mean here？
From a random reading,

But eight different species of chipmunks'scurrying around a "picnic area" will not be found.

What does “picnic area" mean here？ a shared feeding ground?

Adding the context

There are eight chipmunk species in the Sierra Nevada mountain range, and most of them look pretty much alike. But eight different species of chipmunks’ scurrying around a picnic area will not be found. Nowhere in the Sierra do all eight species occur together. Each species tends strongly to occupy a specific habitat type, within an elevational range, and the overlap among them is minimal.

Perhaps, I am overthinking it. However, the arrangement of the sentences make me think that the phrase "picnic area"  means it more.

Answer

I think it's referring to a place where people can have a picnic, like a park. It's not very clear though.

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