One problem can lead to another, sometimes more frightening..
I really get concerned when I see pigeons, birds nesting on someone’s roof and I get worried when it happens to be rodents in someone’s attic. Remember this home seal from a few years ago “Pigeons and their Mess!” and “It’s not always what you think! Ceiling stain.”
Here is a story and video from Albuquerque about a very similar problem – secondary infestation from bird mites and carpet beetles. “Pigeon problem leads to bug infestation at Albuquerque apartment” by Chris Ramirez KOB Eyewitness News 4.