Swallow / Gwennol
Hirundo rustica
Breeding 1984-89
Breeding 1968-72
Winter 1981/82-1983/84
Winter 2007/08-2010/11
Breeding 2008-11
Breeding 1984-89 vs 2008-11
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Contains Ordnance Survey data
© Crown copyright and database right 2013
Distribution map species lists
Breeding change maps
Species richness maps
© 2014 Glamorgan Bird Club
Breeding 1984-89
Status
Tetrads
Present
2
<1%
Possible
46
11%
Probable
51
13%
Confirmed
200
49%
Total
299
73%
Breeding 2008-11
Status
Tetrads
Present
71
17%
Possible
74
18%
Probable
64
16%
Confirmed
142
35%
Total
351
86%