Murder Scene?

 If anyone can explain this please get in touch.

In the middle of nowhere, a dead deer and magpie. Also, scattered around the scene is a large skeleton (could be a sheep), several decomposing birds and a single, fresh pig’s trotter. What’s going on?

Pig's trotter
Pig’s trotter
Dead deer an magpie
Dead deer an magpie
Sheep bones
Sheep bones
Bird bones
Bird bones