South East Scotland Tetrad Atlas 1988 - 1994 - non-sensitive breeding species
Records for all bird species for which breeding (possible, probable and confirmed) was recorded during the 7 survey years 1988-94. Records of birds recorded in the category "present but not breeding" are not included in the dataset as these do not relate to breeding birds.
All records come from the Lothian and Borders Recording areas (see http://www.thesoc.myzen.co.uk/soc-recorders.htm). The survey covered all 1765 tetrads, comprising 7000 sq km, of the South-east Scotland area covering the Borders and Lothians. Habitats include the city of Edinburgh, the Tweed Valley, heather moorland and the sea cliffs of Berwickshire.
250 volunteers collected some 92,000 records on 168 species. Recording effort was probably greatest around population centres, but this has not been quantified.
The aim of the survey was to build a complete picture of all the breeding birds of the Lothian and Borders recording areas during 1988-94 at tetrad scale. Much of the survey work was carried out at the same time as the BTO national breeding atlas.
The data are of high quality, having been checked and verified by the Lothian and Borders recorders and the respective Atlas Working Groups.
Data were collected during systematic surveys of all the tetrads in the Lothian and Borders recording areas. All records have been validated by the respective Local Bird Recorders and/or the Tetrad Atlas working groups. All records are geo-referenced at the tetrad (2x2 km scale).
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