Parrots, songbirds, and hummingbirds can learn to make new sounds. No-one knew, but New Zealand's smallest bird, the rifleman or titipounamu, may have a rudimentary version of the same talent.

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Scientists are rethinking the evolution of vocal learning in birds. New Zealand's smallest bird, the rifleman or titipounamu, may have a rudimentary version of the talent possessed by parrots, ...