Species richness
Numbers of species recorded in each tetrad
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Contains Ordnance Survey data
© Crown copyright and database right 2013
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© 2014 Glamorgan Bird Club
Winter 2007/08-2010/11
Species
Tetrads
0
3
1%
1 - 30
80
20%
31 - 45
180
44%
46 - 60
109
27%
61 - 75
22
5%
76 or more
12
3%