Quaker parrot, also called Monk Parakeet, is a small, bright-green parrot with a greyish breast and greenish-yellow abdomen. this parakeet is 29 cm (11 in) long on average, with a 48 cm (19 in) wingspan, and weighs 100g (3.5 oz).
Females tend to be 10% to 20% smaller, but can only be reliably sexed by DNA or feather testing. The call is loud. Domestic breeds in colors other than the natural plumage have been produced. These include birds with white, blue, and yellow in place of green. Monk parakeets are highly intelligent, social birds. Those kept as pets routinely develop vocabularies of scores of words and phrases.