Answer:
trapped/angry
Step-by-step explanation:
In this piece of poetry, the bird is described as feeling frustrated and trapped. The bird beats its wing against the cruel bars of its cage, and the poet suggests that it does so because it longs to be free, to fly and swing on the bough, but it is forced to return to its perch. The bird's actions reflect a sense of longing, confinement, and the pain of not being able to enjoy the freedom it desires.