Bird Atlas 2007-2011

The BTO Bird Atlas is on the go.

In 2007-8 I did two tetrads, TG22A and TG 42V.

In 2008-9 I’m doing TG02S

Those are the grid squares.  Each survey requires a two hour walk recording all the birds you see, visiting all the main habitats in the 2x2km square.  This is called a timed tetrad visit, or TTV. The winter survey requires a visit Nov-end Dec, then again in Jan- Feb.  The spring survey, again two visits, is April – mid May and May to end July.

Results are being shown on line as they come in – http://www.bto.org.uk/birdatlas/

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