I went looking on the internet for anything I could find concerning the disappearance of Honey Bees in my area and this is what I found :
Colony Collapse Disorder (or CCD) is a little understood phenomenon in which worker bees in a beehive or Western honey bee colony abruptly disappear.
CCD was originally found only in Western honey bee colonies in North America[1]. European beekeepers were reported to have observed a similar phenomenon in Poland, Greece, Italy, Portugal, and Spain, and initial reports have also come in from Switzerland and Germany, albeit to a lesser degree.[2] None of the supposed cases outside the US has been confirmed, as of June, 2007, to show the telltale signs of CCD (see below for more).
The cause (or causes) of the syndrome is not yet well understood: even the existence of this disorder remains disputed. Theories include environmental change-related stresses,[3] malnutrition, unknown pathogens (i.e., disease[4]), mites, pesticides such as neonicotinoids, radiation from cellular phones or other manmade devices,[5] and genetically modified (GM) crops with pest control characteristics such as Transgenic maize.[6] That the disappearances have almost exclusively been reported from a subset of the commercial beekeepers in affected areas (i.e., not feral colonies or organic beekeepers), suggests to some that beekeeping practices can be a primary factor.[7]
You can read the whole article on Wikipedia at this page :
http://en.wikipedia.org/wiki/Colony_Collapse_Disorder