There are no snakes in Northern Ireland. Bird watching is a popular national pastime. Britain is home to a large variety of birds. About 200 species are regularly seen. The most common ones are those which remain all 7 year round. Other well known birds are crows, robins, wrens, woodpeckers. One of the worst dangers for the birds is the popularity of ordinary housecats. Saltwater fist are important to Britain's economy. Cod, haddock, herring, plaice are caught off the coasts of Britain, although there are concerns about the decrease of stocks. Lobster, crab and other shellfish are caught along inshore waters. Natural Resources Britain has a variety of mineral and agricultural resources, but must rely on imports of both. Mining in Britain has an ancient history. Salt mining, for example, dates back to pre-historic times
Further white spotting breaks the saddle up into smaller patches as shown in the black-and-white Grade 7 piebald cat. Sometimes one or more white rings encircle the tail - for some reason this ringed effect seems more common in tabbies. With any degree of spotting, there may be coloured smudges on the cheeks, chin or nose. Some cats also have black toes on otherwise white paws. Jean Bungartz described two bicolour patterns in his 1896 book "Die Hauskatze, ihre Rassen und Varietäten" (Housecats, Their Races and Varieties) in " Illustriertes Katzenbuch" (An Illustrated Book of Cats). His description of the "masked cat" is the tuxedo pattern, which he describes as "sometimes the tail-tip is white also. The eyes of this variety are bright yellow with black rims. Regular and sharply defined white patches create the most beautiful Mask Cats which have many admirers." Bungartz describes a less familiar bicolour he calls the black-headed or Moor-headed cat
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