Investigators said Guillermo Reyes, 49, was pulled over last week at a routine checkpoint in the city and officers heard a voice in the car repeating "he's drunk, he's drunk," Spanish-language newspaper El Universal reported Tuesday.
Police said they looked inside the vehicle, expecting to find another person, but instead discovered Reyes' pet parrot.
Reyes failed a sobriety test and was arrested on a drunken driving charge. The parrot was supposed to be taken away by Animal Surveillance Brigade officers, but Reyes told them the bird is with him at all times and could suffer stress if separated.
The parrot was allowed to accompany Reyes to jail.