I am reading very interesting post about the CCD here. Really the answer is in the wind, like song the other, but I remember to Mr Paxton, form the Ulster University speaking about the bumble bee in UK and Ireland. It is disappearing around the great cities, kilometres away from the great cities.
It is necessary to take control of the whole wild life around. The bumble, solitary , and honey bee detailed census, year after year, can tell us about the CCD or perhaps, total massive disorder.