How does a weatherhouse work?
There is a gut string inside which reacts to all changes in air humidity. Depending on whether the air is dry or humid, the gut string changes its position and twists, so that the female turns outside when it is dry and the male when it is humid.
Instructions for setting up your weatherhouse
Hang or stand the weatherhouse in an "airy" place. If the weather is dry turn the chimney until the woman just comes out. If it is wet, turn the chimney until the man comes out. Only adjust it once, and ensure others do not fiddle with it.