Swallow / Gwennol

Hirundo rustica

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Contains Ordnance Survey data
© Crown copyright and database right 2013

SN90 - Aberdare SO00 - Merthyr Tydfil SS87 - Porthcawl SS88 - Pyle SS96 - Llantwit Major SS97 - Bridgend SS98 - Pencoed SS99 - Rhondda ST06 - Roose ST07 - Ely Valley ST08 - Llantrisant ST09 - Abercynon ST16 - Barry (Present) ST17 - Cardiff West ST18 - Caerphilly ST19 - Ystrad Mynach ST27 - Cardiff East

Breeding 1968-72

Status

Hectads


Possible

0


Probable

0


Confirmed

17

100%


Total

17

100%


Winter 1981/82-1983/84

Status

Hectads


Present

1

6%


Breeding 1984-89

Status

Tetrads


Present

2

<1%


Possible

46

11%


Probable

51

13%


Confirmed

200

49%


Total

299

73%


Winter 2007/08-2010/11

Status

Tetrads


Present

11

3%


Breeding 2008-11

Status

Tetrads


Present

71

17%


Possible

74

18%


Probable

64

16%


Confirmed

142

35%


Total

351

86%