First nest building
Record the first time you see adult birds gathering nesting materials in their beaks. Nest building can begin from January.
Available historic data: we have some data for the following years; 1753-1966, and 1983-1999
Record the first time you see adult birds gathering nesting materials in their beaks. Nest building can begin from January.
Available historic data: we have some data for the following years; 1753-1966, and 1983-1999