Mapping the distribution of Hertfordshire's birds
Mean hourly count
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0 - <999
999 - <
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This map shows the relative abundance data from TTVs, plotted as mean hourly counts.
Hover over the map to see the tetrad identifiers, names and mean counts. Click in the map to see species list for tetrad
Map Index for Breeding Mean Abundance maps
Previous : Tawny Owl
Next : Nightjar
Winter mean abundance map
Winter maximum abundance map
Breeding maximum abundance map
Breeding distribution map