Mapping the distribution of Hertfordshire's birds
Mean hourly count
0 - <2.00
2.00 - <5.75
5.75 - <11.00
11.00 - <22.50
22.50 or more
Distribution maps
Change maps
Abundance maps
This map shows the relative abundance data from TTVs, plotted as mean hourly counts.
Map Index
Previous : Jay
Next : Rook
1967-73 Breeding Atlas
1981-84 Winter Atlas
1988-92 Breeding Atlas
2007-12 Winter Atlas
2008-12 Breeding Atlas
1967 vs 1998 Change
1998 vs 2008 Change
2007-12 Winter Abundance
2008-12 Breeding Abundance
Hertfordshire Bird Atlas webpages designed by LTD Design Consultants and built by Garganey Consulting