Keeping pellets in the food bowl

Every morning when I get up, there are a lot of pellets on the cage floor near the bowl. It almost looks like they are digging them out, because the pellets remaining in the bowl are always sloped. Are they trying to get to better pellets? I put their food bowl in another bowl, so that does contain some of the mess. Do they not like their bowl and I should look for something else?

Also, a few weeks ago, they MOVED the pellet bowl into the hidey house doorway! Does that mean they want their food in the hidey house?

Thanks!