We saw CCD move through holding yards, from one end to the other, as early  
as December, 2006.  We've been all over the U.S. looking at CCD, have often  
seen it move through holding yards and apiaries.  
 
We've also seen it move from bees brought in from one state to bees in  
another state - when the introduced bee colonies were set down beside  colonies 
already in the receiving state's beeyard.  Again, we first  saw this in 2006, and 
have seen it happen over and over - put CCD  colonies  in a yard with non-CCD 
colonies, and you are likely to see many of them  collapse.  Keep in mind, we 
DO NOT see every colony in a CCD beeyard  collapse, but we see a few, than 
more, until only a few are left.  In  some cases, it takes them all out, but 
more often, it will take out 50-80% of  the colonies in an apiary before its run 
its course.  In some cases, the  beekeeper has picked up the survivors from 
several beeyards, placed them all in  a common yard.  Depending on whether these 
are 'survivors' or still  collapsing, the next visit is likely to show one of 
two extremes - colonies  coming back, or all of them dead.
 
Jerry



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