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Webster 1913 Edition

Noun.

A little bird; a nestling.

birdlet ‎(plural birdlets)

A small bird.
- 1603, John Florio, translating Michel de Montaigne, Essayes, London: Edward Blount, OCLC 946730821, II.12:
  And if the Ichneumon, which is his mortall enemie approach to fight with him, the little birdlet, lest he might surprise him whilst he sleepeth, with his singing, and pecking him with his bill, awakens him, and gives him warning of the danger he is in.