I just checked and the four eggs in the nest we had found in our pool filter have hatched! The babies are sooooo tiny, they are about the size of a small pinky finger nail. I was going to take a picture but they are really hard to make out in the nest so I posted ones from the internet that look a lot like mom & babies. Kelly & I went into the pool for a swim but got out quickly because we didn't want the mom bird to stay away to long because of us.... Even though the filter is not right on the pool I am very worried for these babies, a snake could climb up the fence and get them. I wish I could just put the mom & babies in a bird cage and keep them safe until they are ready to fly away. We are pretty sure the mom is a Carolina wren.