Nice shooting Matt.
Cat, Crow, or Hawk - each of those has been reported more than once as Starling steelers. Have you checked for critter foot prints around where that Starling went down ?
I've noticed the Crows land away from the dead bird and walk up to it. Plus, Crows often leave wing tip marks in the snow when they land and take off.
The Hawks I've had here land in one spot and don't walk around, just eat right where they landed, or there are no foot prints at all because they landed on the dead bird, grabbed it and took off.
Paul.