Identifying hedgehog populations through camera trap surveys across Greater London to inform conservation actions for their protection, connection and expansion

London Hogwatch

London HogWatch was established in 2016 to identify the locations of the main hedgehog populations in Greater London.

By increasing our understanding of hedgehog abundance and distributions, we can better inform future conservation management strategies and help halt the decline of hedgehog populations in London.

A team member attaching a camera trap to a tree

There has been a

30-

75%

decline in hedgehog

numbers since 2000

Our Work

We carry out systematic camera trapping surveys across Greater London in a range of different habitats, including parks, gardens, and private green spaces. This allows us to collect data on the presence and absence of hedgehog populations. Our analysis of the data enables us to address knowledge gaps about the occurrence, size, and connectivity of hedgehog populations.

Animated image of HogWatch key statistics

London HogWatch is based in the Institute of Zoology, ZSL. Our ability to conduct surveys is only achievable with the kind support of our funders and collaborators, particularly the British Hedgehog Preservation Society, our core funder.

Our Work in London

HogWatch continues to expand every year and has currently carried out surveys in two thirds of all London Boroughs and put out nearly 4000 camera traps across London. This map shows London boroughs HogWatch has surveyed in since the project began in 2016, each year the scope of our work continues to expand into new areas.

Map of London Boroughs where HogWatch has worked

News

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Camera-trap image of a hedgehog