So on a few of the less cold days we've had since probably around mid/late February, I've taken quick peeks under my inner cover.
At first I saw lots of bees over the top frames. I figured maybe they're low on food so I threw together a 2" rim and put sugar patties on. I guess I should say that my one hive is two deeps with tar paper wrap for the winter. I also have a medium box on top with a 3" piece of Styrofoam insulation all winter long. Anyway, everytime I went back to see how the sugar was lasting I had a huge cluster of bees hanging from the inner cover. A couple weeks ago I put on a pollen patty.
Yesterday I had a peek and the huge hanging cluster is still hanging, still have sugar and still pollen patty. The cluster has to be the size of a cantaloupe or bigger.
It was about +4C, a few bees flying I even saw one drinking from my fence battery cover.
I'm hoping at some they decide to move down, I'm hesitant to take the cover completely off. I don't want to inadvertently lose my queen in that cluster. In my opinion it hasn't been warm enough take the time to really have a good look through the boxes anyway. Here we've had maybe a couple days where it's maybe hit +10C in the afternoon but generally a very cool April so far.