Hello Rick & All,
Rick wrote:
I have lost the most bees this year than ever before and am trying to
determine the cause.  The sheltered yards survived better than others.  Some
tracheal mite losses but many were starved or died with honey nearby.  Was
it  the winter, or was the meds of poor quality?
Probbably a combination of both. Take the time to examine closely your
deadouts. Those will be your main clues.
Bob