Metoro mostly said 'moa' at this type of glyph. However, the glyph label moa has been chosen for GD23 because he was even more prone to say moa at that type of glyph.

Hakaturou is the label for GD32 because Metoro hardly ever said that except at GD32 glyphs. I have assumed hakaturou to be Bishop Jaussens spelling of hakaturu (cause to descend, take soundings). However, on Tahiti turou means 'curse, blasphemy', and a bishop ought to know that word.

A few preliminary remarks and imaginations:

1. Metoro evidently saw a fowl (moa), but I do not agree. Instead I see an arm and a hand. But as there is a more naturalistic picture of this in GD35 and there must be a difference in meaning:

Hakaturou glyphs seem to more abstract pictures and I believe what we see here is the hand and arm of a god.

As Metoro presumably had to 'tread softly' in front of the mighty Bishop Jaussen, he would - I think - try to avoid being too clear in matters relating to 'heathen beliefs'. It is probable that Metoro knew what this type of glyph was and that his saying moa was a devious way of telling the truth without the Bishop understanding him. For while gods (= 'birds') are feathery beings in the sky, there is a species which cannot let go of earth: the fowl.

I guess those who created the rongorongo 'alphabet' jokingly made the 'head' of GD32 into a resemblance of the head of a moa exactly in order to suggest the connection between earth and sky.

My reading of the picture in hakaturou as arm and hand was influenced by this parallel:

31
	Ga7-5	Ga7-6	Ga7-7	Ga7-8	Ga7-9	Ga7-10
29
	Kb4-10	Kb4-11	Kb4-12	Kb4-13		Kb4-14