I have two Top Bar hives that survived the -30 F winter in Northern VT. Success, right? Well it's still pretty cold up here 50 F days and 37 F nights but one hives is going to town gathering mucho pollen from God knows where. The entrance is packed with bees going to and fro. The other seems sluggish and very small only very few bees flying. I wondered how I could tell if they lost their queen recently if that's why their small or maybe it's just how it goes and their fine. I thought it could be too cold to open them up and I don't know if it's too early for the queen to be laying.