To put things in perspective
The five most commonly mentioned suspected causes of colony losses (total n = 229 operations) in the AlA and USDA surveys. [Ranked]
Poor Queen
Starvation
Mites
CCD
Weather
source: vanEngelsdorp D, Hayes J, Underwood RM, Pettis J (2008) A Survey of Honey Bee Colony Losses in the U.S., Fall 2007 to Spring 2008. PLoS ONE 3(12): e4071. doi:10.1371/journal.pone.0004071
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