Support for my suggestion to add 2 manu tara birds in order to reach 5 (the new 'fire' needed at winter solstice) is found at the end on page 71 in Manuscript E:

5

erima takaure manu tara

 

72)

he manu tara.erua kauatu te huru.i too mai ai

20

he pi riuriu

a Teke. a Oti

20

he kava eoeo

a Teke. a Oti

20

he te verovero

a Teke. a Oti

20

he ka araara

a Teke. a Oti

20

he kukuru toua

a Teke. a Oti

20

he makohe

a Teke. a Oti

Overcrossed are 5 sooty tern 'spirits' (takaure). I think this was intended as a sign to draw the attention of the reader to number 5 and to the non-presence (as yet) of the arrival of 'daylight' (ao).

A Teke. a Oti are not mentioned at manu tara. This is probably another sign to be deciphered, and it could be another way to underline they belong 'in the Underworld' (are 'vowels'):

kukuru toua ? makohe frigate kena booby tavake redtailed tropic bird
ascending   descending
ka araara sooty tern ruru black petrel
te verovero d:o taiko
kava eoeo d:o kumara white tern
pi riuriu d:o kiakia
manu tara erua 2 sooty terns tavi small lead-coloured tern tuao dark brown tern tuvi gray tern

By presenting them as a pair it is possible to read the Sun cycle either as 360 + 4 or as 365. We can now also perceive 5 as the sum of a pair of tu birds (tuvi followed by tuao) and 3 ta birds.

As to the meaning of a Teke. a Oti a separate page is needed.