SilverFlight
Tende altum, volare altius
All animals (with the exception of very very large ones ie. Bears, Hippos, Horses) are in the same height range as regular humans, with bigger ones like some dogs and wolves being considered "Tall" though not overwhelmingly so.
Even if Loetis is a "short" bird, at 21 years of age, he'd be around the size of a regular teenage boy...unless he has some sort of disease or was born ridiculously small, like our worlds version of a dwarf? But even then he'd be about the size of a child, there's no way he'd be able to sit on us without a LOT of discomfort hahahaha
Ah, as I pictured then, it was just the 16cm threw me off.