Grey Heron / Crëyr Glas

Ardea cinerea

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Contains Ordnance Survey data
© Crown copyright and database right 2013

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

Distribution map species lists

Breeding change maps

Species richness maps

© 2014 Glamorgan Bird Club

Breeding 1968-72

Status

Hectads


Possible

0


Probable

1

6%


Confirmed

2

12%


Total

3

18%


Winter 1981/82-1983/84

Status

Hectads


Present

15

88%


Breeding 1984-89

Status

Tetrads


Present

0


Possible

33

8%


Probable

10

2%


Confirmed

3

1%


Total

46

11%


Winter 2007/08-2010/11

Status

Tetrads


Present

214

53%


Breeding 2008-11

Status

Tetrads


Present

148

36%


Possible

24

6%


Probable

2

<1%


Confirmed

13

3%


Total

187

46%