Tomorrow, 1 November 2008, marks the beginning of the second British Trust for Ornithology (BTO) winter assessment of bird population distributions.

Climate change is causing species’ distributions to shift in a northward direction, however information is lacking or incomplete for many shy and illusive species, that could potentially be affected by climate change.

To gain a better picture of how climate change is affecting bird distributions, the BTO invite members of the public to participate in their efforts to map the current distribution of British bird species.

To take part and to see which areas are lacking adequate data, visit: http://www.bto.org/birdatlas/