Single call extracted from a sequence of calls by a male Bellbird vocalising at intervals of 20 to 30 seconds.  The bird was constantly turning its head apparently listening and watching then extending its whole body to emit each loud note. Recorded near birdfeeders in the "Discovery area", Karori wildlife sanctuary (Zealandia), Wellington, New Zealand.
Tony Wills
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>