This topic shows the reason why beekeepers often say; "All Beekeeping is local"
Bees store food (honey and pollen) for one reason. That reason being, so that soon after the winter solstice the queen can begin laying without bees venturing out to find resources that are not yet available. I have no doubt that despite below freezing temps and 2' of snow, my bees have already begun laying up small patches of brood. We won't see natural pollen from Maples or Willows until late March, early April. Although, if it warms up enough for bees to fly, we will also open feed dry pollen sub, but only in the Spring, never in the Fall.
'Different strokes for different 'locals'
We should expect that In the North it's a slow start, and in the South one can assume it'll be faster, likely by the time natural pollen presents.....any day now for some folks

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In other words, if the bees (and beekeepers) prepared their hives with ample stores of honey and pollen in the Fall, they 'should' be OK, regardless of where they are living.
This isn't meant as a slam, but as much as I enjoy Randy Olivers well researched offerings, he and his bees live in California, where keeping bees is considerably different than Northern Wisconsin.