Bailey at 3.5 weeks...click for info - Here is Bailey ready to go to his forever home....with me. He is cuddling with 'The Geek' a little stuffed bird I got for him so he wouldn't miss his nest mates so much. The Quaker is a small parrot, reaching 11 to 12 inches in length. As a comparison, the Quaker is a bird similar in length to a Cockatiel, but the Quaker's body is heavier and more substantial with an average weight of 90 to 120 grams.