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Photograph 5<br />
Barbs of bees near <strong>the</strong> hive entrance<br />
There can be various causes:<br />
1. over-population,<br />
2. outside temperature too high,<br />
3. honey chamber completely full,<br />
4. some o<strong>the</strong>r form of trouble.<br />
In <strong>the</strong> first three cases, one observes many fanners at<br />
<strong>the</strong> hive entrance whilst in <strong>the</strong> last case <strong>the</strong> hive<br />
entrance is cold and empty.<br />
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