Hi - I had a Robin build a nest in my window box. So I stopped watering the box. She laid 3 eggs and we saw them hatch. Tuesday I saw the mother feeding the babies and they were interacting and had their mouths open. Such a beautiful sight. I think the 3 babies are dead as of today. Why would this happen? I don't want to touch anything but it appears this way. How long do I wait to be sure and can I just remove the nest?