It has disjunct native ranges in Africa and the Indian subcontinent,[2] and is now introduced into many other parts of the world where feral populations have established themselves or are bred for the exotic pet trade.

One of the few parrot species that have successfully adapted to living in disturbed habitats, it has withstood the onslaught of urbanization and deforestation.

As a popular pet species, escaped birds have colonised a number of cities around the world, including populations in Northern and Western Europe.

[3][4] The species is listed as least concern by the International Union for Conservation of Nature (IUCN) because its population appears to be increasing, but its popularity as a pet and unpopularity with farmers have reduced its numbers in some parts of its native range.

[5] The genus name Psittacula is a diminutive of Latin psittacus, "parrot", and the specific krameri commemorates the German naturalist Wilhelm Heinrich Kramer.

Because of the significant separate parakeet imports in Europe, researchers are capable of investigating the widely held hypothesis of climate matching and human activity at the species level.

[11] In the wild, rose-ringed parakeets usually feed on buds, nectar, fruits, vegetables, nuts, berries, seeds, grains, and insects.

Feral parakeets will regularly visit gardens and other locations near human habitation, taking food from bird feeders.

In captivity, rose-ringed parakeets will take a large variety of food and can be fed on a number of fruits, vegetables, pellets, seeds, and even small amounts of cooked meat for protein.

[16] Seasonal changes in testicular activity, plasma luteinizing hormone (LH), estradiol (E2), testosterone (T), and 5 α-dihydrotestosterone (5 α-DHT) were related to pair bond formation, nest building, nest defense, and parental behavior in free living Indian rose-ringed parakeets in northwest India.

A popular pet, the rose-ringed parakeet has been released in a wide range of cities around the world, giving it an environment with few predators where their preferred diet of seeds, nuts, fruits, and berries is available from suburban gardens and bird feeders.

It is also found throughout Lebanon, Israel, Iran, Jordan, the United Arab Emirates, Bahrain, Qatar, and Oman.

[25] There is a burgeoning population of feral parakeets in Great Britain which is centred on suburban London and the Home Counties of South-East England.

[29] It has been suggested that feral parrots could endanger populations of native British birds, and that the rose-ringed parakeet should be culled as a result,[30] although this is not currently recommended by conservation organisations.

[4] A major agricultural pest in locations such as India, as of 2011 the rose-ringed parakeet population was growing rapidly, but is generally limited to urban areas in southern England.

In Italy, Rome is notable for parakeet populations in the gardens of the Palatine Hill, the trees of Trastevere and Janiculum and at Villa Borghese.

[41] In Turkey, there are populations in Istanbul over 1000 parakeets[42] and also in İzmir, Manisa, Muğla, Balıkesir, Ankara, Antalya totally over 5,000.

[25] In the Rhineland, conspicuous bite wounds have been found in bats caught near rose-ringed parakeet nesting cavities.

In the Paris area in France, an attack by a ring-necked parakeet on an adult red squirrel (Sciurus vulgaris) has been reported (Clergeau et al.