I was leaving my home in Sitka Alaska to go, and see what was at swan lake, and will I was walking saw a dark eyed junco chase, and grab at a robins tail feather I don't know why it was doing that, but I have seen it happen to robin a few times now. I crossed the road to go, and see what happened, and look at the robins, and juncos. When I got across the I saw black bird, and thought that that’s not a starling, and realised that it was a rusty blackbird, so I got out my camera, and took some photos of it. That bird is rare for here any time of year, so it was a exciting fined.