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).



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Myathropa florea Hoverfly Common Blue Butterfly Female Lily Beetle Chrysotoxum festivum Red admiral (<i>Vanessa atalanta</i>) Buzzard Male hairy dragonfly (<i>Brachytron pratense</i>) exuvia Demoiselle Wigeon Harvest Mouse Nest Banded demoiselle (<i>Calopteryx splendens</i>) Hoverfly - Syrphus Colletes hederae Ivy Bee Southern Hawker Common Blue Damselfly White-legged Damselfly Roesel's Bush-Cricket Lentinellus cochleatus (Aniseed Cockleshell) in Drostre Wood Elephant Hawk-moth Russula nigricans (Blackening Brittlegill) in Drostre Wood Roesel's Bush-Cricket Common Blue Butterfly Male Ermine Moth Silver-washed fritillary (<i>Argynnis paphia</i>) Poplar hawk moth (<i>Laothoe populi</i>)