A princess parrot reaches about 40 to 46 centimetres, or 16 to 18 inches, in total length as an adult. Almost everyone who asks expects a heavyweight to match that number, and almost everyone is wrong: this Australian parakeet is built like a glider, all length and lightness.
A long tail on a narrow frame
The princess parrot's tail is exceptionally long and graduated, and it makes up a large share of the bird's total measurement. The chest and body are narrow, the head is small and fine, and the wings are long. Colour mutations bred in aviculture, including blue and lutino forms, share the same silhouette as the natural green bird with its pink throat and blue crown and rump, so size expectations hold across the colour forms you will meet for sale or adoption.
What a princess parrot weighs
Most healthy adult princess parrots weigh roughly 90 to 120 grams, barely more than a much shorter parakeet. That light weight explains why this species is a poor match for very small children as handlers: it is not fragile exactly, but it is quick, easily startled into flight, and stressed by grabbing. It also means bar spacing must stay in the small-parrot range, because a slim head and neck fit through gaps that look safe for a bird of this length at a glance.
Housing a bird built for an aviary
Princess parrots have a long history as aviary birds, and their size shows why: they use horizontal space eagerly and fly in long, level sweeps. A wide flight cage or a planted aviary suits them far better than a tall, narrow cage, and perches should be placed so the tail clears the floor and wire when the bird turns or drops to feed. They bathe enthusiastically, so a shallow bath wide enough for that full wingspan gets used daily. Indoors, give out-of-cage time in a room where a startled princess parrot can land safely rather than collide with glass.
Temperament scales with the space you give
A princess parrot with room to fly tends to be the sweet-natured, chattering companion the species is known for, while a cramped one can become noisy and restless. Males often learn to mimic a few words in a soft, high voice, and both sexes produce a pleasant, rolling contact call rather than a true parrot scream. None of that requires a huge bird's budget for toys or food, but it does require square footage, which is the real size question to answer before choosing one.
The commitment behind the measurements
Princess parrots are long-lived for their weight class, so an adult-size bird you bring home may share your household for a great many years, possibly outliving changes in housing, work, and family shape. Buy or adopt with that horizon in mind, meet the actual bird rather than judging from photographs where the tail is often cropped out of frame, and confirm its sex and age in writing where you can. If circumstances ever force a move, a princess parrot settles faster when its diet, words, and daily rhythm arrive with it, which is exactly what KinsLe Transferrable Profiles are built to carry across.