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Join our Mammals on Roads survey

To date, over half a million kilometres of road have been surveyed through Mammals on Roads. Its findings alerted us to the fall in hedgehog numbers and were the basis for projects such as Hedgehog Street and further research to uncover the reasons for the decline.

How does the survey work?

We want to know about your route and what you see along the way, dead and alive. This information is compared year to year, alerting us to changes in the wider population. Mammals on Roads has been running since 2001, enabling us to target conservation action where it is most needed. 

Journeys should include twenty miles or more on single-carriageways—in several sections or a single stretch—and should be outside of towns or built-up areas.

A passenger should record the sightings and the survey’s perfect for those summer holiday getaways! Why not get the whole family involved recording Britain’s mammals?

Read more FAQs.

Take part now

The main survey period is in July, August and September each year, but you record journeys and any sightings online throughout the year. 

Here are some other things you might find useful for taking part:

Findings from previous years

Take a look at what we have found out and what this means for the conservation of British mammals in the links below.

Please contact for results from other years. 

Let's keep in touch...

We'd love to tell you about our conservation work through our regular newsletter Wildlife World, and also how you can save endangered species through volunteering, taking action or donating. You must be 18 or over. The information that you provide will be held by People’s Trust for Endangered Species. For information on how PTES processes personal data, please see our privacy policy.

People's Trust For Endangered Species

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