Beginner Gardening: sunflower issues multiple blooms and ANTS, 1 by JulieQ

JulieQ wrote:
I took a picture of this sunflower that came up on the edge of my woods because it has multiple blooms. I would like to identify it, and was thinking it came from my bird feeder. (You may see that I have a few others as well.) ANYWAY, upon looking closer I discovered that the backs of the leaves are covered by big black ants. What is going on? Here is a picture of the plant. The next pic will be of the ants.