Compost- how did walnuts appear?

Question

I have a vermicompost bin in a covered plastic rubbermaid container in my backyard. There appears to be walnuts in it. At first I thought maybe they were worm cacoons, but I googled photos of them and they do not look anything like that. Any ideas how walnuts could have gotten in a covered compost bin?

Answer 1

Squirrels and chipmunks were my first thought.  Take the walnuts out and place them beside the container.  The animal will destroy your compose if the walnuts are not where they can find them.

Answer 2

Squirrels!

Answer 3

someone put them there, they are toxic to most plants dont use the compost