> How do they define a sideliner as opposed to a hobby beekeeper? 

Beekeepers were assigned to operational size
groups by the following criteria: beekeepers managing 50 or fewer
colonies were classified as backyard beekeepers; those managing
between 51 and 500 colonies were classified as sideline beekeepers;
and beekeepers managing 501 or more colonies were classified as
commercial beekeepers.

[by the way, I don't agree with this, I would set the commercial line at 300]

PLB

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