Feathers fluffed up.
Meaning: This means that the baby birds shook or patted their feathers to make them soft and fluffy and to move them upwards.
Choice of Words: Feathers are the light, soft, and flexible outer covering of birds. Fluffed means to make something soft and fluffy by shaking or patting it. Up means to move towards a higher position or level.
Alternative Expressions
Related Expressions