Re: 50 % Hives lost this Winter
I don't know anything about you, how much experience you have, how many hives you have or how you manage them, so please take my questions as a search for info and clarity.
How long have you been keeping bees?
Have you kept bees overwinter in a single deep and a medium depth super of honey before?
Has this been successful in the past?
Do you treat for mites? When? How often?
It looked like you attempted to feed sugar by spreading it on top of the inner cover. That is not "the Mountain Camp Method". If starvation was what happened to some of your colonies, proper dry sugar feeding w/ newspaper, aka Mountain Camp, may have kept some of them alive. Maybe not.
Thanks for a reply. More info is needed to understand what happened and to advise on what to do differently, if that's what you want.
Mark Berninghausen "To float, upheld, as salt water would hold you, once you dared." Denise Levertov, poet