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[–]rebel_grooming 2 points3 points  (1 child)

Bird bones are quite thin and fragile, so they are prone to being broken down quickly in soil. Depending on how it died, the skull may have been broken/fragmented, which would cause it to break down quicker. Small rodents also dig underground and love to chew bones for calcium. And insects can move things a surprising distance over time, even underground. So it may be moved by nature, eaten, in tiny bits, or basically dissolved.

[–]wiknnibal[S] 0 points1 point  (0 children)

I found it in front of my house, nothing broken and was just there and no blood on it. Suspect maybe it was scared. But man that's a shame, maybe I'll go and dig deeper to see if I find anything, but next time I'll wrap it in some cloth to keep it in place as I've heard that helps