The weather has been chilly for the past couple of weeks, but Saturday was a surprisingly warm day. It was about 68 degrees, and the rain which had been falling the past day or so stopped. So it was a moist but warm time, and the bees took advantage of the warmth to go out foraging:
I don't see them bringing back any pollen, because I think the frost killed off all of the flowers. I put 3 jars of syrup on each hive last week, and have a pollen patty on top of the top bars. I see a lot of bees clustering at the upper entrance:
I suspect they are using it to get to the pollen, and maybe the syrup. I don't see any agitation, so there doesn't appear to be robbing going on.