The poem describes a mother's emotions as her son leaves home to go to war. On the day of his departure, she pins a poppy to his lapel and helps prepare his uniform, resisting her maternal instincts to care for him as a child. After he leaves excitedly, she wanders places that remind her of him, hoping to hear his voice on the wind. Birds are used as symbols of freedom and loss, reflecting her conflicting feelings of worry for his safety and pride in his independence. The poem conveys the mother's sadness, anxiety, and fear through domestic and war imagery as she comes to terms with his departure.