For those of you who have hard winters - like where you get long periods of temperatures well below freezing - what is a "strong" colony after winter?
How many frames of bees usually come through in a full-size wintered colony? I'm sure it's less with nucs, but I'm just trying to get a sense of what the range of (good-average-poor) colony sizes after they've been through a typical frozen winter.
So what's good? What's average? What's poor in your experience?