Beside the work on the windmill, what other hardships do the animals have to face in Chapter VII in Animal Farm?

Chapter 7 is really one of the low points for the animals
of Animal Farm.  As you mentioned, they have to work really hard trying to build the
windmill.  But there are other things going on as
well.

• The winter is a really hard one --
  terrible weather.


• They did not have enough food.  Their
  corn ration was cut back and the potatoes that were supposed to make up for that
  spoiled.


• The other thing that I see as a hardship is all
  the executions and the fact that Napoleon is forcing the hens to allow their eggs to be
  sold.