Question

The birds Darwin thought were wrens, warblers, and blackbirds were actually what?

Answer 1

Even more surprising, the brown birds that Darwin had thought to be wrens, warblers, and blackbirds were all finches. They too, were found nowhere else. The same was true of the Galapagos tortoixes, the murine iguanas, and many plants that Darwin had collected on the islands.

Answer 2

the little brown birds that Darwin thought were wrens, warblers, and blackbirds were actually all species of finches