North East Scotland Breeding Bird Atlas 2002-06

All breeding birds recorded during the 5 survey years 2002-06, except for sensitive and confidential records (for further information on these see section 8). See <a href='http://www.nescotlandbirdatlas.org.uk'>www.nescotlandbirdatlas.org.uk</a> for further details.<br /><br /> Data were classed in four categories of breeding status as follows: <br /> <ul> <li>Observed: 3,407 records</li> <li>Possible: 22,183 records</li> <li>Probable: 23,258 records</li> <li>Confirmed: 31,935 records</li> </ul> It should be noted that the 'Observed category' comprises records of birds that were 'present but not breeding'. E.g. foraging gulls, Rooks, Herons, Swallow, House Martin, Sand Martin etc.