Tui sometimes appear to be singing silently when, in fact, their song is simply pitched too high for the human ear to hear.
GEOFF MOON
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Bibliographic details
Forest and Bird, Issue 303, 1 February 2002, Page 19
Word Count
25Tui sometimes appear to be singing silently when, in fact, their song is simply pitched too high for the human ear to hear. GEOFF MOON Forest and Bird, Issue 303, 1 February 2002, Page 19
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