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A few Arctic-Alpine species have subspecies in the British Isles, some have been in the islands since the last Ice Age, but many spread in the immediate Sub-Arctic conditions as the ice retreated. Furthermore, these species were later reinforced by newer arrivals as the climate assumed temperatures and conditions more similar to the present day.
Lists of insects in the British Isles (2 C, 28 P) Pages in category "Lists of animals of the British Isles" The following 14 pages are in this category, out of 14 total.
Fauna of the British Isles; Subcategories. This category has the following 5 subcategories, out of 5 total. . Lists of animals of the British Isles (1 C ...
a species that colonised the islands during the glacial retreat at the end of the last ice age (c. 9500 years ago); a species that was present when the English Channel was created (c. 8000 years ago); or, a species that was present in prehistory. This list includes mammals from the small islands around Great Britain and the Channel Islands.
Outside this area, unless spread naturally it is considered non-native, usually as a result of cultivation. Britain and Ireland have few endemic trees, most being micro-species of Whitebeam. But there are some interesting endemic trees nevertheless. Apomictic Whitebeams endemic to the British Isles: Sorbus arranensis – Isle of Arran only.
The mild winters mean that many species that cannot cope with harsher conditions can winter in Britain, and also that there is a large influx of wintering birds from the European continent and beyond. There are about 250 species regularly recorded in Great Britain, and another 350 that occur with varying degrees of rarity.
Bird species admitted to the British List are those in BOU categories A, B or C: A: species that have been recorded in an apparently natural state at least once since 1 January 1950. B: species that were recorded in an apparently natural state at least once between 1 January 1800 and 31 December 1949, but have not been recorded subsequently.
Of the 4,000 described species found worldwide, [2] 35 species in 10 families are native to the British Isles. One of these species, Acaeroplastes melanurus, had been considered extinct in the British Isles but was rediscovered in 2002 at its only site (Howth, County Dublin, Ireland), and a further ten species have become naturalised in ...