My sister who lives nearby just had a nasty spring surprise. They noticed a crack in their ceiling (inside their house) and thought it was a leak. After actually calling the plumber they discovered it was not a leak, but squirrels have been stocking pinecones in their ceiling such that the weight caused a crack in the ceiling! It will be a big job to clear all these pinecones away. They have found the entry spot so that has to be sealed as well.
It is kind of funny, not!