> I find smells of the hive during nectar flows are a good indicator.

Except when it isn't. Back in the 1980s I had bees among the citrus groves of San Diego. When oranges bloomed it smelled like heaven. We even got that fragrance when we extracting the combs. But it never amounted to much. The honey was predominantly eucalyptus, no matter how much we dreamt of orange blossoms. My view was that the nectar was very high in water content and by the time it was dried down, there was much left. Eucalyptus nectar can be almost as thick as honey (I know, it depends on the species, and there are a lot of them).

PLB

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