If you scroll the pictures, it will show you all the pictures posted on your page. It will be different for everyone since we can choose how many posts we see per page. I have mine set at 60 items per page, so I can scroll six photos that have been by various people.
Porkpal, I'm not sure if this is what you're talking about.
@Kiki1216, from your description, I'm guessing that you have some kind of caterpillars hatching.