Huggyn and Kyssin
From MIwiki
Huggyn and Kyssin are a pair of parrots owned by Jumbeaux LaFeet.
The parrots are identical twins. They are cursed with a voodoo spell, one parrot always tells the truth and the other always lies. However, when a parrot has answered a question, they will both take off, fly around and land again (confusing people as to whether they have switched places or not). This, along with the fact they are identical, means it's impossible to tell which is the truth-teller and which is the liar.
Guybrush ends up having to look for Tiny LaFeet's buried hat with the assistance of these two parrots.

