We walked along the beach with a raven for a little while this afternoon (14 March 2020). It was searching the wrack line for potential food. At one point the raven found a walnut (see below). [I think the walnuts wash down the creeks and rivers and then end up on the beaches.]
The raven walked over to a piece of driftwood and held the walnut in place with its foot:
Then it tried to open the walnut by hammering it with its bill:
This walnut was apparently too hard to crack, or the raven decided it wasn't worthwhile, so it left the walnut behind and started searching for something else.
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