I was lucky enough to be off the last 2 nights 05-31-2010 and 06-01-2010 so I watched the Owl Box for awhile each night. I watched both parents bring food at very quick intervals to the young. I can only guess that its bugs or night crawlers based on the speed that they make trips to the box. I watched them make about 6 trips in 2 minutes tonight right at dusk. The young are fighting to get to the entrance hole first. I don't have any pictures to share as I am waiting at least a week between each time I check the box. I will check again on Wednesday or Thursday and take a quick picture to post. Mike Sanders Bristol, VA