Wild Wonders of Europe / Geslin / Monk parakeet (Myiopsitta monachus) pair perched in tree in the Vatican garden, Rome, Italy, March 2010

Wild Wonders of Europe / Geslin / Monk parakeets (Myiopsitta monachus) at fountain in the Vatican garden, Rome, Italy

Luiz Claudio Marigo / Flock of Blue crowned parakeets / conures feed on Chinaberry, Bolivia {Aratinga acuticaudata

Gabriel Rojo / Austral parakeet {Enicognathus ferrugineus} Lanin NP, Argentina

Gabriel Rojo / Austral parakeets {Enicognathus ferrugineus} Lanin National Park, Argentina

Rolf Nussbaumer / Flock of Green parakeets flying {Aratinga holochlora} Texas, USA

Rolf Nussbaumer / Green parakeet pair {Aratinga holochlora} Texas, USA.

Pete Oxford / Monk parakeet {Myiopsitta monachus} feeding on mango Pantanal, Brazil

Ashok Jain / Rose Ringed Parakeet looking out of nest hole. Keoladeo NP India (Psittacula krameri)

Andy Rouse / Rose-ringed parakeet (Psittacula krameri) taking off. Ranthambhore National Park, India.

Andy Rouse / Rose-ringed parakeet (Psittacula krameri) taking off. Ranthambhore National Park, India.

Andy Rouse / Alexandrine parakeet (Psittacula eupatria) perched in tree. Ranthambhore National Park, India.