Yes I would say most looks like pine, possibly if it is not all the same tree it almost looks like a couple pieces of sugar maple.....maybe
Definitely a pine species with something else mixed in as well. I will also add that there is more than likely some mean poison ivy growing up that fence so be careful if your getting it.
I'm thinking red and white pine mixed. The thicker barked stuff with orangeish-red underneath is red. On the right side of the pile, smoother bark, I'm thinking white.
Now that you mention it, Shawn, you might be right. Some does look like Red. The bark is right for it. The smooth is probably WP branch wood.