Mapping the distribution of Hertfordshire's birds
Mean hourly count
0 - <1.75
1.75 - <3.00
3.00 - <4.75
4.75 - <7.25
7.25 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 : Great Grey Shrike
Next : Jay
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