Chickens don't talk.
what was the pirate's favourite letter? Many pirates were illiterate and so did not know any letters, much less have a favorite. However, even if this pirate were able to read, it is unlikely that we would be able to find out his favorite letter without asking him since pirates were primarily in existence two to four centuries ago. In addition, most people don't have a favorite letter, and so a pirate would probably not be an exception.