Hi, welcome on board!
We've got an applet (box on the dashboard) with upcoming birthdays.
Go to Menu -> Admin -> Modules Administration & Store
Simple View (basic layout): EPESI core [Optional] -> Additional Applets -> Install
Or advanced view: Applets/Birthdays
Then refresh browser F5 or button - you'll start on dashboard again -> config -> search for birthdays on the right.
Regards,
Adam