One of the best things about a Langstroth beehive is its adaptability. By using optional pieces of beehive equipment like a slatted rack and robbing screen, you can adapt your beehive to suit local conditions.
Like many beekeepers, we lost bees this winter. New packages failed to build up in a normal way last summer and were unusually slow to build comb and put away stores into fall. In September, aggressive yellow jacket predation weakened them further leaving them unable to carry themselves through the cold.
With movable frame colonies, beekeepers discovered pests and diseases that they only superficially knew about. Honeybees, like any other animal, are subject to the frailties of this sometimes pale existence.