I have lost 4 colonies to isolation starvation since mid January so opened all mine at the weekend, 12.5C which is what we had first week in June last year so no big deal. Didn't do a full check just made sure that I moved the outer frames closer to the bees. Unusually all the colonies have stayed very central this winter which I presume is because there have been so few days they could break cluster and relocate in the hive. One colony I had to move 6 empty frames out, 3 either side of the brood area so maybe I just caught them in time. Another unusual occurrence is that my out apiaries have fared much better than the ones at home which for the last 5 years have been 3 to 4 weeks ahead at this point. It will be interesting to see when they start to make swarm prep this year but it won't be before May unless we have the hottest April ever.
Winter roosts and summer nursery roosts, totally different places. May to September for the latter.
E
May of been answered many times but does ivy honey set hard like OSR?
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