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?

Access to Aderyn is subject to terms and conditions. By logging in you indicate your agreement with and willingness to abide by these terms and conditions.

Hedgehog (<i>Erinaceus europaeus</i>) Silver-washed fritillary (<i>Argynnis paphia</i>) Twenty Plume Moth Centre Barred Sallow Crested Coralloides in Drostre Wood Large red damselfly (<i>Pyrrhosoma nymphula</i>) Antler Moth Speckled wood pair (<i>Pararge aegeria</i>) The Gaul (<i>Aspilapteryx tringipenella</i>) Southern Hawker Athalia scutellariae Sawfly White-legged Damselflies Elephant Hawk-moth Flouced Rustic Moth Hoverfly - Melangyna Umbellatarum Green Tiger Beetle Common Hawker Agriphila tristella Common Hawker Southern Hawker Hoverfly (<i>Criorhina floccosa</i>) <i>Glyphipterix thrasonella</i> Four-spotted Chaser <i>Glyphipterix thrasonella</i> 2 Hoverfly (<i>Eristalis nemorum</i>)