Birth

The primary Jewish tradition surrounding child-birth for boys is the circumcision, or the Brit Milah (often bastardized into English as ‘Bris’.) This takes place on the child’s eighth day, and requires the presence of a Mohel (literally, ‘Circumciser’). It is traditionally followed by a celebratory meal called a ‘Seudat Mitzvah’.
For girls, the tradition is instead the ‘Simchat Bat’, which is a naming ceremony carried out during the first Shabbat following the girl’s birth. It is traditionally carried out in a synagogue, during which either the father or both parents will be called forth to read a blessing from the torah. In modern times, it is more popular to carry it out in the family’s home.

By Alex Jeffrey
From: http://www.jewishkansascity.org/page.html?ArticleID=33677