Hello! I have some questions about the height of Au Ra. Not really about the size difference between males and females, more about when male Au Ra start getting so tall.
We see some children in Sui no Sato and the Azim Steppe and I wonder how old they may be. Not all are the same size. All the girls are of course smaller as my character, who is almost the smallest female Au Ra (147 cm or ~4.8"). Most boys are too, but I've seen some that were about the same height as my character. But maybe it only looked like that because they weren't standing up straight and it was hard to compare.
Now with Elezen it is so that they stay small very long (like Alphinaud who is already 16 but is a lot smaller than my character) and then start growing tall. Haurchefant is 28 and Emmanellain probably younger (I read 26 somewhere?), but they are fully grown. Maybe the latter is not yet fully grown, he seems smaller and younger than his brothers, but I don't know.
I couldn't find much about male Au Ra ages, only that Sidurgu from the DRK quests is 26. Also, we can find some male NPCs that are called "youth", like in "Oroniri Youth" or "Uyagiri Youth", which use the normal male Au Ra models. So it seems like they are fully grown when they are still young (I wouldn't call someone who is like 20+ or so "youth" but rather "young man").
So at about 10-12 or whatever age they are they are still small and then they suddenly start growing very tall in just a few years?