These little guys are actually in my neighbors' backyard. There are four babies in there. The cool thing is that the robins built the nest on top of a nest left over from last year. So we're wondering if robins come back to the same place year after year? I have no idea what these are, but they're growing, and multiplying, on the side of the house. I vaguely remember planting bulbs there a few years ago, but I can't remember what they are, and I certainly didn't plant as many as there are growing. But I like them!