We noticed today, that it looks like birds (we hope it's birds) have been pulling some of the fluff out of our nesting bag.
We haven't actually seen any birds near the bag, with the exception of one male robin, who hopped up on a nearby branch, before flying away. Maybe he went to tell his "wife".
I don't know, but when we sauntered over to check out the nest nearby, sure enough, there were new bits of fuzz, and fluff sticking out of it, and one piece of gray yarn woven into it, that wasn't there before.
It's great to be a homeschooler.