rots (Psittaciformes), also known as psittacines (/?s?t?sa?nz/), are birds with a strong curved beak, upright stance, and clawed feet. They are classified in four families that contain roughly 410 species in 101 genera, found mostly in tropical and subtropical regions. The four families are the Psittaculidae (Old World parrots), Psittacidae (African and New World parrots), Cacatuidae (cockatoos), and Strigopidae (New Zealand parrots). One-third of all parrot species are threatened by extinction, with a higher aggregate extinction risk (IUCN Red List Index) than any other comparable bird group. Parrots have a generally pantropical distribution with several species inhabiting temperate regions as well. The greatest diversity of parrots is in South America and Australasia. Parrots—along with ravens, crows, jays, and magpies—are among the most intelligent birds, and the ability of some species to imitate human speech enhances their popularity as pets. They form the most variably sized bird order in terms of length; many are vividly coloured and some, multi-coloured. Most parrots exhibit little or no sexual dimorphism in the visual spenerNet, the developers-only alternative Xbox Live network used by developers to beta test game content developed for Xbox Live Arcade, runs on Xbox 360 debug kits, which are used both by developers and by the gaming press. In a podcast released on February 12, 2007, a developer breached the PartnerNet non-disclosure agreement (NDA) by commenting that he had found a playable version of Alien Hominid and an unplayable version of Ikaruga on PartnerNet. A few video game journalists, misconstruing the breach of the NDA as an invalidation of the NDA, immediately began reporting on other games being tested via PartnerNet, including a remake of Jetpac. (Alien Hominid for the Xbox 360 was released on February 28 of that year, and Ikaruga was released over a year later on April 9, 2008. Jetpac was released for the Xbox 360 on March 28, 2007, as Jetpac Refuelled). There have also been numerous video and screenshot leaks of game footage on PartnerNet, as well as a complete version of Sonic the He
