2. In Heyerdahl 6 we find a picture of bark cloth from Mexico with a design (bottom) very much like the GD19 type of glyphs, though reversed:

... Handy (1930 c, p. 24) ... emphasizes that certain Polynesian traits, such as the 'ceremonial and ornamental use of feathers ... find their parallels in America rather than west of Polynesia.'

An old drawing (curiously incorporating a newly arrived immigrant, the cat) illustrates the entrance to a hare paega (a peculiar Easter Island house resembling an overturned canoe):

(Drawn 1872 by Pierre Loti, according to Heyerdahl.)

At center right we can see a standing person, probably a chief, with a feathered headdress. Glyphs of the GD63 type, mostly referred to as ariki (chief) by Metoro, are often designed with what presumably is a head gear with feathers. Examples: