tom
great
Newly hatched insects are generally called crawlers.
no
A fry
alevin
Well, baby chickens are yellow, but most birds are just grey when yhey are newly hatched.
Newly hatched ducklings actually do not have feathers.
Snakelet, neonate (a newly-born snake), hatchling (a newly-hatched snake)
Kiwi
A newly hatched cockroach is called a nymph.
A newly born or hatched fish is a fry.
Newly hatched birds usually look raw, wet, and floppy.