A drawing of a place where I could have seen one had I understood squirrel behavior.

[Doug]

This outing hurts, because I could have possibly seen one doing would knocks, but not understanding squirrel behave, caused me to use misjudgement.

[Doug]

I will elaborate on this at a later date.

[bipedalist]

Barking squirrels have their own coconut telegraph that is for certain, sometimes it is because they do not understand what they see or encounter if it is novel to their environment, a sort of alarming surprise.