fledgeling

/F L EH1 JH AH0 L IH0 NG/
noun
  1. 1

    A young bird which has just developed its flight feathers (notably wings).

  2. 2

    An insect that has just fledged, i.e. undergone its final moult to become an adult or imago.

  3. 3

    An immature, naรฏve or inexperienced person.

Source: https://en.wiktionary.org/wiki/fledgeling, https://en.wiktionary.org/wiki/fledgling