What’s going on?

I know, I heard about it. Photographs of kittens are cliches. Well, I am not sure there is anything new about this shot of kittens. But I still like it. They are not trying to look cute. They are absolutely in their own world, busy, playing. I do not know what interested both kittens, what they are looking at- there was nothing there as far as I could tell. But they first found it scary enough to hide in the bushes, and then cautiously observed what was going on before emerging and continuing their way. Or maybe it was just a game to them.