Answer:
This poem contains an extended metaphor.
This poem is a tribute to a small bird.
This poem compares a feeling to an animal.
Step-by-step explanation:
The poem is an extended metaphor. The whole poem is about hope being a "thing with feathers".
The poem pays tribute to this small bird. It even says: "little bird" and how it never "asked a crumb of me." Meaning how is it that this bird never asks anything in return.
The poem compares a feeling to an animal. Feeling: hope. Animal: bird.