Anyone know if this is a bird effigy?

[Nappy701]

Wondering if anyone has any idea what this could be ty for help found in se Minnesota on mississppi river.

 

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[quito]

I would say it is not an effigy. Whats it look like when you flip it over? That will probably tell you. I notice you only show one side.

 

[The Grim Reaper]

Looks like a naturally eroded and water worn stone to me. Not an artifact.