Lesser Black-backed Gull / Gwylan Gefnddu Leiaf

Larus fuscus

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Contains Ordnance Survey data
© Crown copyright and database right 2013

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

Distribution map species lists

Breeding change maps

Species richness maps

© 2014 Glamorgan Bird Club

Breeding 1968-72

Status

Hectads


Possible

2

12%


Probable

2

12%


Confirmed

7

41%


Total

11

65%


Winter 1981/82-1983/84

Status

Hectads


Present

14

82%


Breeding 1984-89

Status

Tetrads


Present

0


Possible

9

2%


Probable

6

1%


Confirmed

15

4%


Total

30

7%


Winter 2007/08-2010/11

Status

Tetrads


Present

167

41%


Breeding 2008-11

Status

Tetrads


Present

229

56%


Possible

12

3%


Probable

10

2%


Confirmed

21

5%


Total

272

67%