Immature Red-Winged Blackbird

This image was taken handheld from about 10 feet away. I have never proclaimed to be an expert at identifying birds, wildflowers, trees, etc. When I saw this bird, larger than a sparrow, I was curious as to what it was. I have "The Cornell Lab Merlin" program on my phone, so I pulled up the "Start Bird ID" program. After inserting the variables, it said it was a Red-winged Blackbird. Well, everyone in the Midwest knows what they look like, and I thought, something is wrong with the program.  However, it turns out that the red-winged Blackbird females are a subdued, streaky brown, almost like a large, dark sparrow. And this is an immature female.