Eb3-22 Eb3-23
- -
Ab4-17   Ab4-18  
-
  Ka3-17 Ka3-18 Ka3-19
-  
Ra6-14   Ra6-15 Ra6-16
 
Cb2-9 Cb2-10 Cb2-11 Cb2-12 Cb2-13
I have eliminated glyphs which I believe are irrelevant in this comparison. After that we may perhaps draw the following conclusions:

1. In Tahua (A) and London (K) the tired old bird has been fused with a person which can be seen in toto in Ra6-15. In Keiti this person instead is (partly) seen in the preceeding glyph (Eb3-22).

2. In Mamari (C) it looks as if the tired old bird has been fused with another type of bird with wings behind its back. Perhaps this other type of bird is like Ka3-19, or perhaps - more likely - like Ra6-16. In London the idea of Ra6-16 is possibly partly to be expressed in the happy young bird in Ka3-17?