Welcome to the Guernsey hedgehog project! Here you will find all the information you need about the progress of our exciting project and how to get in touch.

What was the Guernsey Hedgehog Project?

The aim of this study was to find out how many hedgehogs there are in Guernsey using citizen science. Hedgehogs in the UK are classed as Vulnerable by the IUCN but elsewhere, invasive hedgehog populations are causing damage to other Threatened species. Unless we study Guernsey’s hedgehogs, we do not know if they are in danger, causing damage or something different. We asked over 200 Guernsey residents to carry out two evenings of hedgehog watching in their gardens and to record how many hedgehogs they saw as well as some details about the individuals seen. These results were put into a capture-mark-recapture equation to produce several population estimates. The population estimate for the total number of hedgehogs in Guernsey’s grassland is 668 ±52 and the estimate for the whole island is 3631 ±280. There are lots of factors that would need to be studied further to make the island-wide population estimate more accurate, however, it still implies that there is an extremely high density of hedgehogs in Guernsey. This means that we need more research to understand how our large hedgehog population is interacting with our environment. Further studies may show that hedgehogs have assimilated well into the local ecosystem or they may be causing damage to other species. It is important to understand our hedgehog population thoroughly before drawing conclusions or taking any action. If you would like to read a full report of the findings of our study, click on the “Results” tab at the top of this page.


Can I still sign up?
Unfortunately we are no longer accepting new sign ups. We are so grateful for all the volunteers who have been involved and pleased with the continued interest. If you missed out, feeding hedgehogs in your garden can still be a rewarding activity so why not give it a go for fun!

Who sponsored this study?

We are super excited to have Highland Titles as a sponsor for The Guernsey Hedgehog Project! Their funding has allowed us to pay for our fabulous website, our funky logo and to run an exciting art competition on our Facebook page. Check out their website (including details on their Scottish hedgehog sanctuary) at www.highlandtitles.com
Thanks so much Highland Titles!

Was this study ethical?

This study was assessed and approved by the University of Bristol’s animal ethics (ref: UB/20/39) and human ethics (ref: 103382) boards. It was also risk assessed and approved by the university’s health and safety team. If you have any ethical or health and safety concerns, please get in touch. All data collection was carried out in line with COVID-19 restrictions.

I'm worried about a hedgehog - what should I do?

If you are worried about a hedgehog you have found, please contact the GSPCA on 257261 for help and advice. This includes if a nest is disturbed, a hedgehog is out in the day, looks skinny, has lots of parasites or is otherwise unwell.

Get in touch!

Use this form or email us at theguernseyhedgehogproject@gmail.com if you have any questions or would like some more information.

Please contact the GSPCA on 257261 if you have any welfare concerns.

©2020 by The Guernsey Hedgehog Project

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