You might want to get the sunflower seed hearts (unshelled) for a short while, to help the little ones get started, I like to get those because it means there's no shell mess around the feeders. It seems more expensive, but really since you're not throwing away 75% of the content, I think it ends up being cheaper ...
Yes, the babies are SO cute, tho I have to say my little grackle babies, hopping around in the yard and being scared of the chipmunks, are pretty cute too <img src="/images/graemlins/smile.gif" alt="" />
