Whodunit?

While working in the woods the girls and I cam across a crime scene.  Well, not really.  More of a nature scene in keeping with the Platz's mission statement about the survival of the strong and the killing and eating of the weak.

A disturbance in the snow.

Feathers and itty bitty bird parts scattered-about.

These are definitely the remains of a grouse.

click on images to enlarge

The perpetrator was either an owl, hawk or coyote.  Whodunit?