I just watched a bird murder a plant. There's a brown thrasher out in the forest garden. I saw it vigorously digging with feet and beak. Then it ripped a small plant out of the ground, and proceeded to tear into that thing like it was the spawn of Satan. Full-on hammer blows with beak, raking claw strikes, slamming the plant against the tree trunk and shaking it until pieces flew off. I have no idea why. I don't know if the plant was a weed or a flower. There probably isn't enough left to tell. 0_o
Maybe the plant was really an invader from space that just got obliterated by a random Earthling.
EDIT 4/16/19 -- Closer examination revealed the victim to be a crocus. I still don't know why the thrasher felt that a crocus needed to die such a horrible death.