The rose-ringed parakeet, also known as the ring-necked parakeet, ringneck parrot or the Kramer parrot, is a medium-sized parrot in the genus Psittacula, of the family Psittacidae. It has disjunct native ranges in Africa and the Indian Subcontinent, and is now introduced into many other parts of the world where feral populations have established themselves and are bred for the exotic pet trade.
The European fallow deer, also known as the common fallow deer or simply fallow deer, is a species of deer native to Eurasia. It is historically native to Turkey and possibly the Italian Peninsula, Balkan Peninsula, and the island of Rhodes near Anatolia. Prehistorically native to and introduced into a larger portion of Europe, it has also been introduced to other regions in the world. It is one of two living species of fallow deer (Dama) alongside the Persian fallow deer.
The sika deer, also known as the Northernspotted deer or the Japanese deer, is a species of deer native to much of East Asia and introduced to other parts of the world. Previously found from northern Vietnam in the south to the Russian Far East in the north, it was hunted to the brink of extinction in the 19th century. Protection laws were enacted in the mid-20th century, leading to a rapid recovery of their population from the 1950s to the 1980s.
The eastern gray squirrel, also known, particularly outside of North America, as simply the grey squirrel, is a tree squirrel in the genus Sciurus. It is native to eastern North America, where it is the most prodigious and ecologically essential natural forest regenerator. Widely introduced to certain places around the world, the eastern gray squirrel in Europe, in particular, is regarded as an invasive species.
The red squirrel, also called Eurasian red squirrel, is a species of tree squirrel in the genus Sciurus. It is an arboreal and primarily herbivorous rodent and common throughout Eurasia.
A feral parrot is a parrot that has adapted to life in an ecosystem to which it is not native. The birds are often descended from pets that have escaped or been deliberately released. Many species of parrots are highly social, and like to gather in large flocks. Not all feral parrots are able to adapt to life outside of captivity, although having a pre-existing nearby parrot colony can assist with the adaptation process.
Finlayson's squirrel or the variable squirrel is a species of rodent in the family Sciuridae. It is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam. The species occurs in a wide range of wooded habitats, including gardens and parks in cities like Bangkok. It was named in honour of the Scottish naturalist and traveller George Finlayson.
The Mexican gray squirrel is a tree squirrel in the genus Sciurus native to Guatemala and eastern and southern Mexico. It has been introduced to the Florida Keys.
Islands, such as the British Isles, can be adversely affected by the introduction of non-native species. Often an island will have several distinct species not present on the nearest mainland, and vice versa. The native flora and fauna of islands which have been isolated for a longer period of time such as New Zealand or Hawaii are more vulnerable than islands such as Great Britain and Ireland, which became isolated more recently.
Europe's grey squirrels originated in North America, where they are known as eastern gray squirrels. They eat large seeds, flowers, buds, fruits, fungi, some insects and occasionally bird eggs.
Pallas's squirrel, also known as the red-bellied tree squirrel, is a species of squirrel native to China, Taiwan, India, and Southeast Asia.
