Its been a really kind winter overall, though we have one or two poorish sites, due to issues last summer.
Surprising that anyone of any scale is at 100%, will have sites close to that, and indeed a FEW still at 100%...BUT....all the queenlesses and drone layers are still to be found...and we count those as a loss, even if we sort them out other than by shake out.
We do not do autumn uniting so I suppose we will have worse winter losses than many on account of that, but to my counting system uniting is still a -1 process, a loss, no matter what the reason is.
Whilst low or absent losses is a great thing, the also bring an unseen danger long term. Such winters are no use at validating or otherwise your methods...they are no test at all, and its easy to think you are doing everything well, which can sadly come seriously unstuck the first truly challenging late summer/winter. Not much to learn from such an easy winter.
And yet I am getting reports of some who have significant losses this year. Be thankful you are not in one of the areas where paralysis virus has been a big issue recently.
Our biggest concern is dwindling in a few groups (lack of young bees into winter due to severe animal (four legs but one lot it was two legged) disturbance last summer, and some evidence of nosema in a couple of groups which could hamper spring growth. 80% of groups are most satisfactory.
Lack of equipment could be most peoples big issue this year. Zero losses often equates to zero splitting space.