the Scottish crossbill, the UK's only endemic bird species and vertebrate, can be found alongside capercaillie, Scottish wildcat, red squirrel and pine marten. Various animals have been re-introduced, including the white-tailed eagle in 1975, the red kite in the 1980s, and there have been experimental projects involving the beaver and wild boar. Today, much of the remaining native Caledonian Forest lies within the Cairngorms National Park and remnants of the forest remain at 84 locations across Scotland. On the west coast, remnants of ancient Celtic Rainforest still remain, particularly on the Taynish peninsula in Argyll, these forests are particularly rare due to high rates of deforestation throughout Scottish history. The flora of the country is varied incorporating both deciduous and coniferous woodland as well as moorland and tundra species. Large-scale commercial tree planting and management of upland moorland habitat for the grazing of sheep and field sport activities like deer stalking and driven grouse shooting impacts the distribution of indigenous plants and animals. The UK's tallest tree is a grand fir planted beside Loch Fyne, Argyll in the 1870s, and the Fortingall Yew may be 5,000 years old and is probably the oldest living thing in Europe. Although the number of native vascular plants is low by world standards, Scotland's substantial bryophyte flora is of global importance. Demographics The population of Scotland at the 2001 Census was 5,062,011. This rose to 5,295,400, the highest ever, at the 2011 Census. The most recent ONS estimate, for mid-2019, was 5,463,300. In the 2011 Census, 62% of Scotland's population stated their national identity as 'Scottish only', 18% as 'Scottish and British', 8% as 'British only', and 4% chose 'other identity only'. Although Edinburgh is the capital of Scotland, the largest city is Glasgow, which has just over 584,000 inhabitants. The Greater Glasgow conurbation, with a population of almost 1.2 million, is home to nearly a quarter of Scotland's population. The Central Belt is where most of the main towns and cities are located, including Glasgow, Edinburgh, Dundee, and Perth. Scotland's only major city outside the Central Belt is Aberdeen. The Scottish Lowlands host 80% of the total population, where the Central Belt accounts for 3.5 million people. In general, only the more accessible and larger islands remain inhabited. Currently, fewer than 90 remain inhabited. The Southern Uplands are essentially rural in nature and dominated by agriculture and forestry. Because of housing problems in