Cannabilistic Blue Jay

I knew blue jays were agressive but didn’t know they ate other birds! I saw this jay snatch something off the ground that I thought looked like a small critter or maybe a baby jay being rescued. Then it landed on a branch and proceeded to pick at the prey, and I could see the feathers falling to the ground. He wouldn’t let me get too close (flying off with its prey to another tree), but I managed to get a half-decent photo, as shown on the right. You can see the silhouette of the dead bird hanging below the blue jay. (Thanks to Anli for enhancements to original photo.)