Weasel

Weasel

Weasel facts

Status

Native and listed as Least Concern on the IUCN global Red List of Threatened Species.

Widespread throughout England, Wales and Scotland, but absent from Northern Ireland.

Scientific name

Mustela nivalis

Average Lifespan

2 years

Length

17 - 22cm

Tail

3 - 5cm

Weight

55 - 130g

Surveying Services

Overview

Weasels are Britian’s smallest and most numerous carnivores. They are reated to otters and stoats, which is obvious due to their long body and short legs. They have a brown back and a white throat and belly, with shorter tail than a stoat’s. They live in various habitats such as woodland, grassland, moorland and farmland. Their diet consists of mice, voles, and small birds and they need to eat roughly a third of their own body weight daily. Weasels are thought to be common, but there is a lack of reliable evidence in their numbers. The loss of hedgerows across the UK is a factor that could have a negative impact on this species because they use them for cover when moving around their territory.

Sampling Advice

  • The fresher a sample is, the more likely the test will be able to extract viable DNA.
  • A dropping sample with sufficient biological material to be used as a reserve is required in case the extraction is unsuccessful the first time.

Surveying Season

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Sub-optimal survey period =

Droppings

Specimens can be analysed all year round. Most visible in spring when the snow has melted but they still have their white, winter coat. Most active at night.

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