1) Change the obvious name to something more obscure
2) Change British Isles to Britain, and British to UK
3) Garble the language when you get around to it
4) Insert a citation, which you may or may not remember to keep forever (it's there for now)
An example of plagiarism in action (identical or similar text bolded):
About 2000 years ago, wisent lived throughout most of Europe - from Britain in the west, to Siberia in the east, and from Spain in the south, to Sweden in the north. Wisent lived not only in forests but also roamed grasslands.
In Western Europe, wisent became extinct by the 11th century, except in the Ardennes, where they lasted into the 14th century. The last wisent in Transylvania died in 1790.
In the east, wisent were legally the property of the Polish kings, Lithuanian grand dukes and Russian czars. King Sigismund I of Poland instituted the death penalty for poaching a wisent in the mid-16th century. Despite these measures, and others, the wisent population continued to decline over the following four centuries. By the 17th century, the last remaining herds of bison could be found in protected game reserves in the Białowieża Forest of Poland. Thanks to protection measures, the bison number increased to 1,898 by the middle of 19th century. However, in 1862, a rebellion in the Białowieża region resulted in the bison herd being virtually decimated. There were about 380 animals left by the end of the 19th century, and this number increased again, with 785 animals being recorded in 1915. Unfortunately, these bison became victims of the Great War, when German troops occupying Białowieża killed about 600 of the animals for meat, hides, and horns. A German scientist brought to the attention of army officers that the animals were facing imminent extinction, but, at the very end of the war, retreating German soldiers shot all but 9 wisent.
Nearly 4 years later, 54 wisent were recorded in zoos and private holdings, and scientists and ecologists from Sweden, Germany, the UK, and Poland decided to create the Society for the Protection of the European Bison. However, the last wild wisent in Poland was killed in 1919, and the last wild wisent in the world was killed by poachers in 1927, in the Western Caucasus.  By later that year fewer than 50 remained, all in zoos. In 1929, Poland bought 2 cows from Sweden, and a bull from Germany. Wisent returned to the Białowieża Forest, but only within breeding stations. The first calf was born in the following year.
World Wildlife Fund Panda.org
Some 2,000 years ago, the European bison (Bison bonasus) roamed the vast temperate, deciduous foreststhat stretched from the British Isles through most of Europe and into Siberia. Excessive hunting, urbanization of the countryside, and clearing of forests for agriculture dramatically reduced bison populations over the centuries.
In the 17th century, the last remaining herds of bison could be found in protected hunting reserves in the forest of Bialowieza (Poland). Thanks to protection measures, the bison number increased to 1,898 in the middle of 19th century. However, in 1862, a rebellion in the Bialowieza region resulted in the bison herd being decimated. There were about 380 animals left by the end of the 19th century, but this number increased again, and 785 animals were recorded in 1915.
Victims of World War I
Unfortunately, these bison became victims of World War I, with German troops occupying Bialowieza killing 600 of the animals for meat, hides, and horns. A German scientist brought to the attention of army officers that the animals were facing imminent extinction, but at the very end of the war, retreating German soldiers shot all but 9 bison. The end of the European bison in the wild occurred in 1919, when a poacher shot the last individual.
Nearly 4 years later, 54 bison were recorded in zoos and private holdings, and Swedish, German, British, and Polish scientists decided to create the Society for the Protection of the European Bison. In 1929, Poland bought 2 cows from Sweden and a bull from Germany. Bison returned to the Bialowieza forest but remained in breeding stations. The first calf was born in the following year.
Reviving bison populations
By the beginning of World War II, the number of bison had increased to 30 in Poland and 35 in German breeding stations. Polish foresters managed to convince Russian officials to protect the bison. Russians posted signs in the Bialowieza forest prohibiting the killing of bison. Offenders would be sentenced to death. When Germany took over the area, they maintained the protection measures. At the end of the war 24 bison had survived in Poland and 12 in Germany.