Predatory songbird northern shrike visits

Northern shrike is about the size of a whiskyjack or Canada Jay

They are known to store their catch by impaling it on thorns

I see a couple of northern shrikes every year but this is the first that I have ever photographed. It had killed -- or found-- a pine grosbeak right next to our sunroom yesterday. I say "found" because a grosbeak had beaned itself on the glass windows and had been sitting on the snow earlier. I thought it had recovered and left when a couple of hours later I spotted the shrike on the snow with feathers flying all around. Although the grosbeak must weigh about two-thirds as much as the shrike, the shrike flew off with it in its talons.
Shrikes eat small birds, usually, as well as mice. I have seen them try to catch chickadees at the feeder but never succeed. Chickadees are absolute acrobats and when caught out in the open simply fly in a tight spiral. The shrikes are pretty darn good aerialists themselves but can't quite turn as sharp a corner. The pair of birds fly around and around but the spiral pattern continually moves toward a conifer, like a balsam fir. Once the cover is reached the chickadee disappears and the shrike gives up.
Shrikes are called predatory songbirds. Why they simply aren't known as tiny hawks I'm not sure.