This data package describes the modelled relative (not absolute) abundance of Carrion Crow (Corvus corone), Magpie (Pica pica), Buzzard (Buteo buteo), Kestrel (Falco tinnunculus), Red Kite (Milvus milvus), Red Grouse (Lagopus scotia), Ring-necked Parakeet (Psittacula krameria) and Red-legged Partridge (Alectoris rufa) in Britain and Ireland. This was used to produce Bird Atlas 2007-2011 maps of relative abundance at a tetrad (2x2km) resolution. Acknowledgement: These data originate from the Bird Atlas 2007–11 project which was run by the BTO in partnership with BirdWatch Ireland and the Scottish Ornithologists’ Club. We are grateful to the thousands of volunteers who undertook and organised the fieldwork for the atlas. Please refer to the metadata for a more detailed description, and for information on dataset usage. v1.5 update: added Pheasant (Phasianus colchicus) If you would like access to this data for another species, please get in touch with BTO via email: datarequests@bto.org ........................................................................................ BTO would also greatly appreciate if you could fill out this very short form to tell us how you intend to use these data. Thanks in advance!