No, that's the energy of a spirit, which is the most commonly seen shape of energy through a camera.
Spirits LOVE to come around kids. Kids are naturally open to the other dimmensions that aren't physical, because they haven't yet been biased in any way, or heard that its not "right" to do.
Spirit guides, loved ones, many are around kids.
Ever see a baby start laughing hysterically for no reason?
Actually, I have a son who will be three in Sepetember, and a couple of my closest guides (especially Neil) LOVES to make funny faces to make my son laugh every so often. Usually he will be throwing a fit about something (after all, he's two!) and then will start suddenly laughing at someone standing behind me, and its usually Neil playing with him.
So definitely very common, and a beautiful reality in life!
Mary