Red-Winged Blackbird

I put up a thistle sock a week or so ago, thinking the House Finches would enjoy it. Just now, a Red-winged Blackbird was feeding on it. The Woodpeckers, Orioles, and Grosbeaks, both male and female, come frequently to the feeders.

I just looked up to see a beautiful little bird, maybe a Finch of some sort, kind of chartreuse colored. I haven't identified it yet.