Will adding a birdbath near bluebird house put babies in danger?

Hi!  We have 5 babies about to begin their first lessons in flight.  We’re estimating this will occur within the next week.  We added a birdbath within 20-30 feet of the bluebird house a few weeks ago, however it has attracted many other birds, including large Ravens.  I am worried that we have put the baby bluebirds who are about to begin leaving the security of their nest in harms way.  I read that adding a birdbath was a good idea, however, after watching day after day, I am becoming more concerned for their safety.  Any advice will be greatly appreciated.  Thank you.  Judi