122 Bird-Song : and New Zealand Song Birds 
a quick gurgle of notes, as in (25), the sound being bell-like, but . 
softened, as though a bell were struck quickly with a wooden <j{E 
mallet. 
At Kapiti, in December, 1916, and January, 1917, the call- 
notes differed from those heard before. There were many varia¬ 
tions, the ones most often heard being (26) and (27), and they ' 
were sung every day, the semiquavers varying from two to four 
in number, sung at the rate of about ten a second,—the effect 
being that of the rebounds of a hammer on an anvil. In this 
28 
f - 
E=] 
c- j 
S- 
fern 
c — 
^- 
ir 
kM 
5^ 
s 
E=j 
■* - 
l— a J 
E= 
E 
(tfb 
%):--■— r 
tsrr tsrr kiau i 
Kiau i 
" 
== 
respect they resembled (25), but differed in quality of the sound, f i 
At times the rebound quickened to a vibrato, lightly uttered, but I 
quite distinct. The calls were uttered in about a second and a I 
half. The first note was usually vocalized more or less, at times .• I 
distinctly tiau or tiok. The phrase (28) was sung whilst the 
bird was in the air. 
Ihe tui flew up, closed its wings, and dived perpendicularly 
fiom a height of 20 to 25 feet into a karaka, spreading its wings 
and tail at the moment of entering the foliage. The notes were 
sung during the fall, time under two seconds. The tsvv tsvv was 
almost a squeak; the / was in both cases faintly vocalized kiau, 
and the cj i as in hit. The concluding notes were full 
