>>/69566/
Don't think there is a specific language skill, it is a function of the general factor of intelligence "g" indeed, but it is more temperamental, if you're doing it or not.
I've been told I have a talent for this but I don't think it is a talent at all, just be curious and try to do stuff on your own, every retard can speak their language if they are immersed in it for long enough.
In general if there are multiple books written on a subject then a monkey could get it given enough time, be it English, linear algebra or quantum physics.