Definitions:

1. A young newly hatched offspring of birds which is still in the early stages of development, requiring care and feeding from their parents until they are old enough to fend for themselves. NOUN
   • The baby bird's beak was a tiny pink triangle.
2. Is a young bird that has recently hatched from its egg. NOUN
   • The baby bird's eyes flickered open as it first encountered the world.
3. Young bird not yet fledged. NOUN
   • The baby bird's wings fluttered weakly as it tried to take flight.

Synonyms:

• chicks
• fledglings
• nestling