Wisdom! to leave his wife, to leave his babes, / His mansion, and his titles, in a place / From whence himself does fly? He loves us not: / He wants the natural touch; for the poor wren, / The most diminutive of birds, will fight, / Her young ones in her nest, against the owl.
Act IV, Scene 2 · Lady Macduff
Context
Lady Macduff continues her criticism of Macduff's abandonment, arguing that even the smallest, weakest creatures defend their young. She contrasts the wren fighting an owl with her husband's flight.
Analysis
The wren-versus-owl metaphor works through size inversion: Lady Macduff chooses the "most diminutive of birds" to shame her husband, implying that even nature's weakest show more courage than he does. By gendering the wren female ("Her young ones"), she positions maternal instinct as braver than masculine political calculation, directly challenging the play's equation of manhood with violent action.
Essay Tip
Use this to argue that Shakespeare presents competing definitions of courage in the play—Lady Macduff's animal imagery suggests that protecting one's family requires more bravery than the battlefield heroics Macbeth and his warriors prize.