A survey of bird distribution, in summer and winter, over the four year period between 2007 and 2011.

Geographic Coverage: The survey covered both Britain and Ireland, but only the Republic of Ireland subset of data are displayed.

Temporal Coverage: Four winters and four summers from November 2007 to July 2011.

Species Groups recorded: bird, birds

Dataset Status: Complete, except for records of some of Ireland's rarest birds.Sighting of red-necked phalarope, white-tailed eagle, golden eagle, black-tailed godwit, marsh harrier and little ringed plover during the breeding season, and golden eagle in winter, are not mapped in order to safeguard these species from possible disturbance.

Additional Information: Further information some of the key findings of the survey are presented on the BirdWatch Ireland website http://www.birdwatchireland.ie/OurWork/ResearchSurveys/Atlas/tabid/487/Default.aspx