Bird Atlas 2007-11

Bucks Atlas Update - March 2011

Maps of Passerines

Maps of Non-Passerines


Tetrads status as of 8th June 2011


Grey dots 1-19 species

Orange dots 20-29 species

Red dots 30-39 species

Black dots 40+ species





Data provided by Dave Ferguson



Winter Tetrads status as of 1st March 2011


Grey dots: 1-14 species

Orange dots: 15-24 species

Blue dots: 25-39 species

Black dots: 40+ species


Average species per tetrad - 44




Data provided by Dave Ferguson




For details of the project read on

Most of you accessing this site will be aware of the BTO atlas project to produce a concurrent winter and breeding atlas over the next 4 years (using 10km x 10km squares. However what you might not know is that there is also a plan to produce a detailed Bucks atlas at the tetrad (2km x 2km) level using the same data.

This will then give us the chance of assessing the species local to Bucks interest and perhaps answer some of the following imponderables.

Just how many Buzzards and Ravens are establishing themselves?

How are Corn Buntings, Partridges and other farmland birds faring in the north and west?


A Corn Bunting and the species distribution map from the "Birds of Buckinghamshire" 1991.  The species has declined significabtly since that time.

Are Willow Tits and Lesser Spotted Woodpeckers almost gone?


The map from the 1991 Birds of Buckinghamshire shoes that the Lesser Spotted Woodpecker was scarce at that time.  Has the species declined since that time?

In the winter where do Bramblings go during the day?


Iím sure you could think of many more.