Aderyn :: Home

Welcome to Aderyn: the Biodiversity Information and Reporting Database of Local Environmental Records Centres Wales. Here you can access wildlife sightings and species records collated by the four LERCs, covering the whole of Wales. Anyone can use this site to view lists of species recorded around their home or maps showing the distribution of species according to data held by LERC Wales. Partners, recorders and planners can be licenced to access high resolution, detailed records to assist decision making and conservation.

What's in my Area?

Ever wondered what species have been seen near your house, school or workplace? This page allows you to find out! Using the map, you can navigate to the location you are interested in, select a 1km grid square, and return a summary of all species for that square (excluding sensitive species).


Distribution Maps

This page allows you to see where LERC Wales holds records for a specific species or taxon group (eg birds) across Wales? Select a species or an entire taxon group and display a 10km distribution map, then select a 10km square and see a 1km distribution map (excluding sensitive species).



If you are authorised to access restricted areas of this site, enter your email address and password to login. Forgotten your password?

Small Pearl-bordered Fritillary Common Blue Damselfly Migrant Hawkers Robin Black Darter Migrant Hawker Elephant Hawk-moth Twenty Plume Moth Argyresthia trifasciata Hoverfly - Syrphus Clouded Yellow Common Blue Butterfly Male Green Tiger Beetle Southern Hawker Migrant Hawkers Hummingbird Hawk Moth Hoverfly - Eupeodes Cardinal Beetle Large Red Damselfly Small Blue female Trout Antler Moth White-legged Damselflies Southern Hawker Goldfinch