Turn it over to the wildlife department.
moms take care of baby quails because a mom knows some moms probabled learned from its mother
First you must separate the young quail from the older ones. They can not be kept in the same cage or pen. The older quail view them as competition and will most likely kill all the young quail given...
Baby Quail will seek the protection of their mother beneath her wings at any perceived threat . They also can get warmth from grouping together.
Leave it alone.