Join Gethin in this online session to find out more about the BTO's Heronries Census, and how you could take part in it.

Beginning in 1928, the Heronries Census is our longest-running survey. In this session, we'll cover what makes the Grey Heron (and it's relatives) a wonderful bird to study, and how you can help us by joining our Heronries Census volunteer team. About a third of Welsh heronries remain un-monitored, so it would be fantastic to boost coverage this year.

We look forward to seeing you there!