As parakeets are spreading and breeding so quickly, estimates of parakeet numbers vary. A larger species may be referred to as "parrot" or "parakeet" interchangeably. An endemic bird subspecies is the Kermadec red-crowned parakeet. Rarities include sets of passenger pigeon, Carolina parakeet, and Bachman's warbler eggs. This was a smaller bird, three-quarters the size of the Carolina parakeet. Gould called it the orange-bellied grass parakeet. Notable endemic species include the Hispaniola trogon, Hispaniola parakeet, grey-crowned tanager and the Hispaniola Amazon. He is usually accompanied by his green-cheeked parakeet, Jacques, who speaks with a robotic voice. The rose-ringed parakeet is sexually dimorphic. Five subspecies of the Alexandrine parakeet are currently recognized. The endemic Socorro parakeet ("Aratinga brevipes") and Townsend's shearwater ("Puffinus auricularis"), are also endangered. Colour mutations of the Indian rose-ringed parakeet subspecies have become widely available in recent years. The monk parakeet is globally very common. Among his works is "Five-Colored Parakeet on Blossoming Apricot Tree". The club's official mascots are a green parakeet, named Periquito, and a pig, named Gobatto.