the red fox, Eurasian badger, Eurasian otter, weasel, stoat and elusive Scottish wildcat. Various species of seal, whale and dolphin are found on or around British shores and coastlines. The largest land-based wild animals today are deer. The red deer is the largest species, with roe deer and fallow deer also prominent; the latter was introduced by the Normans. Sika deer and two more species of smaller deer, muntjac and Chinese water deer, have been introduced, muntjac becoming widespread in England and parts of Wales while Chinese water deer are restricted mainly to East Anglia. Habitat loss has affected many species. Extinct large mammals include the brown bear, grey wolf and wild boar; the latter has had a limited reintroduction in recent times. There is a wealth of birdlife, with 628 species recorded, of which 258 breed on the island or remain during winter. Because of its mild winters for its latitude, Great Britain hosts important numbers of many wintering species, particularly waders, ducks, geese and swans. Other well known bird species include the golden eagle, grey heron, common kingfisher, common wood pigeon, house sparrow, European robin, grey partridge, and various species of crow, finch, gull, auk, grouse, owl and falcon. There are six species of reptile on the island; three snakes and three lizards including the legless slowworm. One snake, the adder, is venomous but rarely deadly. Amphibians present are frogs, toads and newts. There are also several introduced species of reptile and amphibian. Flora In a similar sense to fauna, and for similar reasons, the flora consists of fewer species compared to much larger continental Europe. The flora comprises 3,354 vascular plant species, of which 2,297 are native and 1,057 have been introduced. The island has a wide variety of trees, including native species of birch, beech, ash, hawthorn, elm, oak, yew, pine, cherry and apple. Other trees have been naturalised, introduced especially from other parts of Europe (particularly Norway) and North America. Introduced trees include several varieties of pine, chestnut, maple, spruce, sycamore and fir, as well as cherry plum and pear trees. The tallest species are the Douglas firs; two specimens have been recorded measuring 65 metres or 212 feet. The Fortingall Yew in Perthshire is the oldest tree in Europe. There are at least 1,500 different species of wildflower. Some 107 species are particularly rare or vulnerable and are protected by the Wildlife and Countryside