5 Red Lights in a Tree

My son and I had something strange happen to us the other evening that I need to see if I can find an answer to.

I am on this forum primarily due to spiritual happenings in my life, however, I don't think this precludes some type of interaction with other life forms. Several nights ago, my son and I were taking a walk and I spotted a red light high up in a neighbor's tree. We could not figure it out and my son said it was the weirdest thing he had ever seen. There was something up there that had five (to the best of our visual count) red, continuous lights. His first thought that it was some kind of a monitoring camera that had been installed there. My thought was of the possibility of some kind of very small craft that had perched itself up there (don't know why). We watched for about 10 minutes and couldn't figure it out, so we continued our walk. When we returned home, he went to see if he could still see it and said there were absolutely no lights up there. The next day he looked and could see absolutely nothing. Now, there could be numerous explanations, but since I was thinking more in the UFO realm, I thought I would check here first to see if anyone had experienced something similar. Thanks in advance.