Jeffrey Hamelman wrote:

> just large beekeepers, particularly those who do a lot of trucking, or if
it is hitting all beekeepers proportionally, including sideliners and
hobbyists. Does anyone have any information about this?

In this month's ABJ:

Generally, the total loss experienced by commercial beekeepers
(managing more than 500 hives) was the lowest at 31.2% 
when compared to hobbyist (managing 1 to 50 colonies; 38.0%)
and sideline (managing 51 to 500 colonies; 35.4%) beekeepers.
However, the average loss reported by each group was approximately
the same.

An Estimate of Managed Colony Losses in the Winter of 2006 – 2007:
A Report Commissioned by the Apiary Inspectors of America
by DENNIS VAN ENGELSDORP, ROBYN UNDERWOOD, DEWEY CARON, and JERRY HAYES, JR.
American Bee Journal 
July 2007

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