Perry's Index to the Aesopica
Fables exist in many versions; here is one version in English:
THE CROW AND THE BOASTFUL SWALLOW
The swallow boasted to the crow, 'I am a fair young maiden and the daughter
of the King of Athens!' The swallow then proceeded to tell the story of Tereus
and how she had been raped by him and how he had cut out her tongue. The crow
said to her, 'If you talk so much with your tongue cut out, what would you do
if it had been left intact!'
Aesop's Fables. A new translation by Laura
Oxford University Press (World's Classics): Oxford, 2002.
cover, with new ISBN, published in 2008; contents of book unchanged.
Perry 377: Gibbs (Oxford) 213 [English]
Perry 377: Chambry 350 [Greek]
You can find a compilation of Perry's index to the Aesopica in the gigantic appendix to his
edition of Babrius and Phaedrus for the Loeb Classical Library
(Harvard University Press: Cambridge, 1965). This book is an absolute must for anyone interested
in the Aesopic fable tradition. Invaluable.