What were some of Lucille Ball's fears?

Answer 1

She was always afraid of birds. Not live birds, but in paintings and such, and wouldn't stay in hotel rooms with bird wallpaper.

This is because when her father died when she was a child, there was a sparrow feeding in the windowsill, and this really affected her.

Answer 2

She feared pictures of birds. When her father died a picture of birds fell off the wall and she had a phobia ever since.