Usage Note
Naturalista is both the noun ('a naturalist') and the adjective ('naturalistic'). As a noun it is común (common gender): el naturalista / la naturalista. It refers to a scientist who studies natural history—plants, animals, geology—in the field tradition of figures like Darwin or Humboldt, and is distinct from ecologista (environmentalist activist).
Examples
"El naturalista observó aves en el pantano."
Natural Translation
The naturalist observed birds in the marsh.

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