Another Dead Frog

Once again, I walked by the local church on my way to work and once again I come across another dead frog! However, unlike my blip from yesterday, today this poor frogs head has been completely separated from its body. I'm starting to think that there must be birds (magpies to be more precise) out there taking advantage. I'm not sure if I can come up with any other explanation.....especially after my blip from yesterday!
Your thoughts?