I keep finding dead sparrows underneath my birdfeeder.

Each time I notice dead sparrow has the same injury, the back of the skull and the brain is missing .

We have cats around but this is not a typical way a cat eats a bird.

Can you tell me what is going on here? It seems as if maybe a bird is going it. The wound is very precise like a beak pecked at it. Would other sparrows kill other sparrows like this or perhaps another type of bird?

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I have been asked this question by Loraine, but I just do not know the answer. 

I have never heard anything like it.

Please can anyone help?

Loraine, I will ask my knowledgeable friends and see what they say?

Have you had any more dead sparrows?  I hope not.

Trisha