>If the screened bottom is not protected from winds, or closed off in winter, the outer surface of the cluster is going to be under far more stress than it would in a solid-bottom hive.
>
Sometime around 1900, in the heart of South Moravia, the Mrštík brothers apply light, perforated sheet metal chimneys to the French flight lockable entrance. According to their idea, it is an important element against theft during feeding and at the same time as a solution for a calm and airy winter.
The illustrative photo is part of the pdf document on the conservation intervention in bee colonies.
Gustav Palan
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