It's just getting light, at least an hour before sunrise and 50 F degrees. Lately, my one hive is up and at 'em, pile of bees outside on the landing board and they're coming out, some falling off the board onto the grass, crawling back to the landing, gathering up and then flying off. A bunch more flying in and appearing, despite the cold and dark, returning from foraging. Lots of activity very early in the cold. The second hive (must be Millennial Bees sleeping in) not one on the board, no sign of any activity. It's been like that for the last few days. By the time the sun hits the hive around 8, the second hive wakes up and both hives are buzzing by 9, heavy traffic in and out. Strong fall flow, goldenrod and all the fall goodies going. Two deeps with several supers each, genetically identical bees from two nuc's from same supplier last spring. Anyone know what's going on?