Weird places birds build nests

A few weeks ago, I bought a plant with some flowers on it ( geranium ivy, I think). The weather was crazy and so I couldn't hang it for awhile (too cold). I finally put it up on Easter weekend and then the flowers all died. Oh well. Here's the plant:

Later, I saw this bird couple hanging out in the plant and pulling stems and leaves out. Apparently, my yard is prime bird real estate and these two had trouble finding a spot to nest. So they used my hanging plant. We noticed that the female was hanging out in the plant more often so this evening, while she was out and about, I took a peek at what was going on. Here's what I found: