
The Brown Rat is a native of central Asia which was introduced to the British Isles around 1720. This incredibly adaptable mammal has subsequently spread throughout the British Isles, and indeed much of the temperate world, carried especially by humans in ships. There is little doubt that due to its capacity to breed and ability to adapt to most environments it has come into conflict with humans. A while this invasive species can be a real problem for both farmers and in a domestic environment , for me personally when in the wild it has a charm and personality , super intelligent and inquisitive and a playful nature.
Common rats are not territorial, but live in loose colonies with a hierarchy determined largely by size and age. There seem to be small family groups within the colony. Rats dig their own burrows, and entrances are usually joined by obvious well-used runs. In hedgerows, the males may have ranges averaging 600m, and females 340m, but in food stores may be as small as 65m. Reproduction is observed all year round in human dwellings.
The Brown Rat has Greyish-brown fur, a prominent pointed muzzle, eyes, large ears and long, almost naked, tail, about the same length as the head-and-body. Much larger than any mice, but comparable with the much darker, shorter-tailed water vole in general size, the Brown Rat is less ‘chubby’ in appearance. Head & body: 15-27cm. Tail length: 10.5-24cm. Weighing 40g at weaning, up to 600g as an adult. Most Brown Rats are usually Between 200-300g.
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