Just a thought.
I was mentioning this to my boss, and he said that some poisons make animals go crazy before they die.
Very often they get paranoid, delusional, SEEK HIGH GROUND for some reason.
Skunks can't climb very well, but when poisoned, they get franctic and are capable of climbing just about anything.
(with the exception of Spotted Skunks that will climb up and down anything, spotted skunks are good climbers!)
If they were poisoned, and became delusional, they could have climbed up to the top of your house and/or shed and then died from the poison.
And if there is any plant, tree, shrubs, wires, pipes, or anything that would help them climb up your house or shed, they would use that to get to the top.
Someone in your neighborhood may be poisoning animals.
![Angry >:(](https://www.worldwidewatergardeners.org/forum/Smileys/smilies_smf/angry.gif)