the.com/nestling
a bird too young to fly, too loud to ignore, gaping for everything
means A young bird still in the nest, too undeveloped to leave it; figuratively, anyone snug and dependent within a sheltering home.
from From Old English nest, the bird's home, plus the diminutive suffix -ling that marks the small and the belonging (as in duckling, darling). So a nestling is literally a 'little nest-one' — a creature defined by the place it cannot yet leave. The verb 'to nestle,' to settle in cozily, grew from the same root, both circling the deep Germanic sense of nest as a built, hollow refuge — possibly related to ancient roots meaning 'to sit down' or 'settle.'
- Bald start
- Many hatch naked, eyes sealed shut
- Gape signals
- Bright mouth linings beg parents to feed harder
- Weight rush
- Some double their mass in days
- Fledgling next
- Leaving the nest upgrades them to fledgling
- Brood parasites
- Cuckoo nestlings shove rivals overboard to monopolize food
eaglet — young bald eagle, typically fledges at 12 weeks in nests like those at haliaeetus leucocephalus breeding sites
gosling — young goose, canada geese goslings migrate with parents from arctic breeding grounds to temperate zones
owlet — young owl, barn owl owlets remain in nest for 7-8 weeks before fledging in temperate regions