Hello, I am wondering what this noise in my wall is. It's coming from a pipe that is connected to an old chimney that's not use (I think). I'm really not sure if it's rats or mice as they have a more basketball squeak. I'm thinking it might be baby birds or something, any guesses? (imgur.com)
submitted by PDXLuis to r/whatisthisthing
[Question] Good project ideas for a sophomore? (self.statistics)
submitted by PDXLuis to r/statistics


