We have had some trauma the last 2 days for our robins nest. Sparrows have been attacking the mom and dad and knocked one of the babies out of the nest today. We managed to scoop the baby up and put him back in the nest. I read online that it was ok to put him back. We went by our local Wild Birds Unlimited to see if we could do anything to keep the sparrows away but he said no. Apparently sparrows are just not nice birds and will try and take over the other birds nests rather than build thier own. They also take over the food supply and run other birds off. I always thought they were harmless boy was I wrong. LOL I got a video today of the mom feeding the babies that I will post.