From early childhood Bird was frail, suffering from a spinal complaint, nervous headaches, and insomnia. The doctor recommended an open-air life, and consequently, Bird learned to ride in infancy, and later to row. Her only education came from her parents: her father was a keen botanist who instructed Bird in flora, and her mother taught her daughters an eclectic mix of subjects. Bird became an avid reader. However, her "bright intelligence, an extreme curiosity as to the world outside, made it impossible for her brain and her nature generally to be narrowed and stiffened by the strictly evangelical atmosphere of her childhood".