Definition of nestling in English:

nestling

Syllabification: nest·ling
Pronunciation: /ˈnes(t)liNG
 
/

noun

A bird that is too young to leave its nest.
More example sentences
  • It's the first study to show that birds have learned to recognize and reject cuckoo nestlings.
  • They are very aggressive and are able to take over nests and kill the eggs and nestlings of other birds.
  • We provided food supplements to half of the nestlings in each nest during the nestling period.

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Word of the day grammarian
Pronunciation: grəˈmɛːrɪən
noun
a person who studies and writes about grammar