It was a beautiful autumn day for our walk to the Raumanga Falls yesterday.
Tūī are known for their incredibly complex and varied songs, which include clicks, whirrs, creaks, and melodies. Because they have a massive vocal range, they often produce sounds that are at such a high frequency—sometimes bordering on ultrasonic—that they are beyond the range of human hearing. This is why there appear to be gaps in their song.

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