Another angle to this:
Have you guys that collect much pollen from your hives ever considered 
what the consequences are for the colonies when they are deprived of the 
pollen for longer periods? After all, one of the bees naturally required 
food sources is suddenly taken from them and this must have an impact on 
their well-being. Nowadays loaded with other external interrupting 
factors like mites, diseases, viruses, polluting agents and our 
strangely behaving climate and also depriving the bees the inflow of 
their pollen may well be their neck shot! Aren't we a little too greedy 
here?

Ron van Mierlo

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