I refer you to David Heaf's recent book, Treatment Free Beekeeping
Thanks for the reference is this the same man.
“I have to admire Mr Heaf's transparency, but also his sheer hubris. His early timeline goes like this:
2007: 6 Warre hives populated with bees.
2008: All 6 colonies survived the 2007/8 winter (0% winter loss). Some high varroa counts seen (no treatment given of course). More Warre colonies added making 11 in total by the end of the year.
2009: 5 out of the 11 colonies starved during the 2008/9 winter (45% winter loss). Another was found to contain a non-laying queen in May. More Warre hives were populated during the year, making a total of 12. Colonies had to be fed in autumn as they were critically short of stores.
2010: 2 of the 12 failed overwinter due to a non-laying queen (17% winter loss). More Warre hives were added, making a total of 15, but 3 died during the year. At the end of the summer David wrote “Of the 15 colonies in Warrés in the summer, only 12 are going into winter -- the same as last year -- and some of those are already looking as though they will not make it through winter.”
2011: Only 4 out of the 12 over-wintered colonies survived (67% winter loss).
At this point (early 2011) David decided it was the right time to publish “Bee-Friendly Beekeeper: A Sustainable Approach”
I had to look up "Sustainable" and "Friendly" just to make sure I had understood the meaning of those words correctly.”
Credit to mr BB
In fairness I was rather hoping for something from a more reliable source, or peer reviewed on this ground breaking work. Bar a book written by an amateur with minimal hives is there anything else?