Seabirds at Sea Evidence Base shows the abundance and distribution of seabirds in welsh waters. This dataset is made up of two parts. Shown here are the grids coloured based on the density of flying and sitting bird species on a 3km grid scale and the survey coverage. This has been derived from the raw data showing observations of all seabirds. Surveys were conducted using both boat and aerial surveys. Where seabirds couldn't be identified to species level these were grouped into relevant assemblages. Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved.