“At Skywalker Sound there’s a chicken coop with these little chickens, and Coya Elliott, our first assistant, went down and recorded those chickens. And then we took that sound and slowed it down and stretched it out and found little chirps,”
Originally, Porgs were supposed to be based on goats, and at one point sound was recorded of a goat for the film. I can't imagine a Porg with a voice like a goat, so I'm glad they went the route that they did. Thanks to i09 for giving us all the info we could ever ask for on Porgs as they were in the top 5 things I loved about this film.