Otter numbers on rivers Tees and Tyne are surveyed

Otter (generic) The Environment Agency said in the late 1970s the otter population was in "severe decline" in the UK

Otters living between the rivers Tyne and Tees are being surveyed by conservationists.

The population declined between the 1950s and 1980s and Durham Wildlife Trust wants to judge current numbers.

It will be looking for evidence such as droppings.

Durham Wildlife Trust has been running an otter project since April 2010 to restore habitat and encourage otters back to waterways.

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