All hives have over-wintered. Can they over-spring?

All my current hives (A, D, E, G) are upright (after the recent windy weather) and sound. The hives are fairly heavy, which is reassuring. A peak through the door shows the floor to be fairly clear. Their colonies (1, 4, 8, 12) appear to be fine. They were flying when the weather was warmer; there is evidence of activity on the base board.

The base boards have darker chewed wax which usually means brood hatching. It's hard to know when this was fell because I've only occasionally looked. It does suggest that there has been a slow but steady rearing of brood.

I can't tell much difference between the hives which are insulated and those which are not. Two are; two are not. One of the uninsulated hives had evidence of some condensation but not much.

Last spring was devastating for my colonies. Brood rearing had started to increase in the warmer weather but then it became very cold. Colonies which had insufficient stores or few bees starved. I hope that there will be sufficient honey in the hives to keep them fed. I was careful not to take much last summer and 2 of the hives are insulated. We should know in a month.