More on ancient Maori hieroglyphic script

The ancient Maori hieroglyph referred to here is that recorded by Richard Taylor in 1861. In my view the sloping straight line signifies the flight path of the space ship. The human figure with the "sperm" has sloping eyes, akin to an alien's, unlike the other two human figures.

I believe the message transmitted is something like:

"We sailed (down the incline) from the twin star [6] in the constellation [4] where we lived as earth-bound (backward-pointing feet) birds [15] under our (smaller/more distant) sun  [6]. We embarked onto our spaceship [7] and travelled down past the stars [3]. We first landed on the moon [2] before finally disembarking [8] here on earth, where we used our sperm [11] to produce working human beings [13,14] under your sun [9] and rain [12]."