They're like street urchins neighbor. They know where you are now. They pass that info out while they're down south for the winter.
"Hey dudes, there's this Field Grade guy up in N ID, no need to go any further or go hunting around the forest for flowers and crap. The dude puts out GALLONS of sweet stuff every week. Don't worry, he has a truck he can put lots of sugar in. He may even be happy and get a date out of the deal if he's smart."
"He acts grumpy about how hard it is to feed us, but he kinda likes having us around. Dude even likes owls, flying squirrels, and other critters! (just don't be a furbearer, he likes them fine too, but he likes them drying on a frame)"
Geno