They were too little to go much of anywhere on their own, so it's most likely they were turned into food. That's the natural way of the world here in the woods and so I don't fret over them. God has His hands on all His creation and sees the sparrow when it falls....but it still does fall. If He is content with that, then so am I.They are so pretty! Sorry to hear about the disappeared ones, I hope they're o.k. Wherever they went to.