
When you inspect your hive(s) and find dead outs this quick diagnosis may help. If the problem is still unclear, bring a sample to the next meeting and/or call one of our more experienced beekeepers.
Varroa: Look on the bottom board for a lot of dead Varroa mites along with the dead bees. If there are thousands of mites, it was probably Varroa.
Starvation: If the cluster was not in contact with any stores and there was a sub zero freeze, consider starvation. Look for dead bees headfirst in the cells and lack of stores on the center 3 or 4 frames.
Dwindling: If the hive went into winter with bees that are to old the hive can dwindle to where it can’t manage really cold weather because the cluster wasn’t big enough.
Tracheal Mites: A lot of crawling bees and not a tight cluster or dead bees scattered throughout the hive when it was cold enough that they should have clustered.
Nosema: If there is a lot of evidence of dysentery and the hive has died.
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