How do horses give birth?

In the same way that a human does the mare will at 11 months begin the process of parturition. This is where the internal muscles begin to contract and 'push' the foal out. The process usually occurs at night and can take anywhere between 30 min and a few hours.

ANSWER: Just like humans do.

Thier birthing period takes about 30 min., and the foal should be able to stand within an hour of it's birth (to wean on it's mother's milk).