What animal does Antigone remind the audience of in

Antigone reminds the audience of a bird, more specifically a nightingale, in Sophocles' play. When the chorus sings of Antigone's impending sentence and death, they compare her to a nightingale weeping outside the gates for her dead son, Itylus, who was killed by his own mother. Just as the nightingale continues to mourn and sing her sorrows, Antigone remains steadfast and mournful in her defense of her brother, defying Creon's orders.