Can Anyone Explain?

When we went on our bike ride, I asked Rod to carry my camera. He had pockets, and I didn't. I thought he was going to ride with me. I didn't know that he was going to take off and never look back! OK. He waited for me a few times. Finally, at one of the stops, I asked for my camera back so I would have it. But I found a few pics on there that he took. This is one of them. Why? What was he taking a picture of? And once again, he was riding more with the group, and there were NO pictures of anyone we knew. None of his son. None of his son's friends. No one at all from our group. But he got this!