Pigeons

Pigeons are demons from Woodburn, they like nothing more than crapping on everything they can

find, and attacking human civilians.

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What to do if you encounter a Pigeon.
If you see a Pigeon then flee!, it is completely impervious to bullets for some magic reason, you could try to settle your differences by talking it out with the Pigeon, but this will most likely end with you being fatally crapped upon.

Everything Else
Pigeons are known to munch on anything and everything, and to add insult to injury, crap on it as well.