Herring Gull / Gwylan y Penwaig

Larus argentatus

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Contains Ordnance Survey data
© Crown copyright and database right 2013

SN90A - Mynydd Blaenrhondda SN90F - Mynydd Ystradffernol SN90K - Lluest-wen Reservoir (Present) SN90Q - Panwen Garreg-wen SN90V - Rhis-gwawr SN90B - Craig y Llyn (Present) SN90G - Mynydd Beili-glas (Present) SN90L - Mynydd Bwllfa SN90R - Dare Valley Country Park SN90W - Cwmdare (Present) SN90C - Cwm-hwnt SN90H - Rhigos (Confirmed breeding) SN90M - Hirwaun SN90S - Penywaun (Present) SN90X - Llwydcoed SN90D - Pontneddfechan SN90I - Hirwaun Industrial Estate (Confirmed breeding) SN90N - Pontbren Llwyd (Present) SN90T - Llwyncoch (Present) SN90Y - Nant-moel Reservoir (Present) SN90E - Hendrefydd SN90J - Moel Penderyn SN90P - Penderyn (Present) SN90U - Mynydd-y-glog SN90Z - Onllwyn SN91F - Hendre-bolon (Present) SN91K - Garn Ddu SN91Q - Nant-maden SN91V - Cefn Sychbant SN91R - Tir-yr-onen SN91W - Pant y Gadair SN91X - Cefn Nantygeugarn SO00A - Aberaman SO00F - Cefnpennar SO00K - Cwmpennar SO00Q - Aberfan (Present) SO00V - Bedlinog SO00B - Abernant (Present) SO00G - Aberdare SO00L - Abercanaid SO00R - Troedyrhiw (Present) SO00W - Mynydd Cilfach-yr-encil (Present) SO00C - Coedcae Farm SO00H - Blaencanaid (Present) SO00M - Twynrodyn (Possible breeding) SO00S - Pentrebach SO00X - Mynydd Fochriw SO00D - Clwydyfagwr (Present) SO00I - Gellidaeg (Present) SO00N - Pen-y-Darren (Probable breeding) SO00T - Dowlais (Present) SO00Y - Rhaslas Pond (Present) SO00E - Penmoelallt (Present) SO00J - Trefechan SO00P - Gurnos (Present) SO00U - Pant (Present) SO00Z - Blaencarno (Present) SO01A - Llwyn-on Village SO01F - Darren Fach SO01K - Ponsticill SO01Q - Twynau Gwynion SO01V - Pen March (Present) SO01B - Llwyn-on Reservoir SO01G - Garn Ddu SO01L - Pontsticill Reservoir (Present) SO01R - Buarth y Caerau SO01C - Nant-ddu SO01H - Waun Wen SO10A - Blaen-nant-wen (Present) SO10F - Deri SO10K - Aberbargoed SO10B - Pen-y-bank (Present) SO10G - Coed Deri-Newydd (Present) SO10L - New Tredegar SO10C - Fochriw (Present) SO10H - Abertysswg SO10M - Mynydd Bedwellte (Present) SO10D - Rhymney SO10I - Twyn Abertyswg SO10E - Llechryd SO10J - Rhymney Hill SO11A - Tafarnaubach (Present) SO11B - Trefil Ddu SS77Y - Rest Bay SS77Z - Sker Point (Present) SS78V - Kenfig Pool (Present) SS78W - Kenfig Rivermouth (Possible breeding) SS87V - Traeth Bach (Possible breeding) SS87R - Southerndown SS87W - Dunraven (Present) SS87M - Ogmore Rivermouth (Present) SS87S - Ogmore-by-Sea (Possible breeding) SS87X - St Brides Major (Present) SS87D - Porthcawl (Present) SS87I - Newton (Present) SS87N - Wig Fach (Present) SS87T - Candleston (Present) SS87Y - Ogmore (Present) SS87E - Nottage (Present) SS87J - Pant yr Hyl (Present) SS87P - Tythegston (Present) SS87U - Laleston (Present) SS87Z - Broadlands (Present) SS88A - South Cornelly (Possible breeding) SS88F - North Cornelly (Present) SS88K - Stormy Down SS88Q - Llangewydd (Present) SS88V - Bryntirion (Present) SS88B - Llanmihangel (Present) SS88G - Pyle (Present) SS88L - Cefn Cribwr (Present) SS88R - Cefn Cross (Present) SS88W - Aberkenfig SS88M - Hafodheulog Wood SS88S - Mynydd Baedan SS88X - Tondu SS88N - Mynydd Ty-talwyn (Present) SS88T - Brynllywarch (Present) SS88Y - Shwt (Present) SS88J - Waun Lluest-wen SS88P - Llangynwyd SS88U - Cwmfelin (Present) SS88Z - Lletty Brongu SS89F - Mynydd Bach (Present) SS89K - Maesteg (Present) SS89Q - Garth (Present) SS89V - Moel Cynhordy SS89L - Nantyffyllon (Present) SS89R - Mynydd Pwll-yr-lwrch SS89W - Foel Gwilym Hywel SS89M - Caerau (Present) SS89S - Croeserw (Present) SS89X - Mynyd y Gelli (Present) SS96D - Nash Lighthouse (Present) SS96I - St Donat's Bay (Confirmed breeding) SS96N - Col-huw Point (Possible breeding) SS96T - Stout Bay (Probable breeding) SS96Y - Summerhouse Point (Possible breeding) SS96E - Nash Point (Confirmed breeding) SS96J - Marcross (Present) SS96P - Dimlands SS96U - Llantwit Major (Present) SS96Z - Eglwys-Brewis (Present) SS97A - Broughton (Present) SS97F - Monkton (Present) SS97K - Bryn sych (Present) SS97Q - Siginston SS97V - Pen-y-Bryn SS97B - Tre-pit (Probable breeding) SS97G - Wick (Present) SS97L - Llandow SS97R - Llandow Industrial Estate (Present) SS97W - Llandough (Present) SS97C - Castle-upon-Alun SS97H - Llampha (Present) SS97M - Colwinston (Present) SS97S - Pentre Meyrick SS97X - Cowbridge (Present) SS97D - Ewenny (Present) SS97I - Brocastle SS97N - Llangan SS97T - Penllyn SS97Y - Llansannor SS97E - Heronston (Possible breeding) SS97J - Waterton (Confirmed breeding) SS97P - Treoes SS97U - Ruthin (Present) SS97Z - City SS98A - Brackla (Present) SS98F - Coity (Present) SS98K - Pencoed (Present) SS98Q - Felindre (Present) SS98V - Llanilid Opencast (Present) SS98B - Sarn (Present) SS98G - Cefn Hirgoed SS98L - Green Meadow (Confirmed breeding) SS98R - Brynnau Gwynion (Present) SS98W - Brynna (Present) SS98C - Bryncethin (Present) SS98H - Heol-laethog SS98M - Heol-y-Cyw SS98S - Wern Tarw SS98X - Llanbad (Present) SS98D - Bettws (Present) SS98I - Blackmill (Present) SS98N - Glynogwr (Present) SS98T - Cwm Ogwr Fach (Present) SS98Y - Gelli'r haidd (Present) SS98E - Pont-y-rhyl (Present) SS98J - Lewistown (Present) SS98P - Cwm Dimbath (Present) SS98U - Evanstown (Present) SS98Z - Hendreforgan (Present) SS99A - Pontycymer SS99F - Ogmore Vale SS99K - Mynydd yr Aber SS99Q - Mynydd Maes-teg SS99V - Penygraig (Present) SS99B - Blaengarw SS99G - Nant-y-moel SS99L - Mynydd William Meyrick SS99R - Clydach Vale (Present) SS99W - Tonypandy (Present) SS99C - Werfa SS99H - Craig Ogwr SS99M - Bwlch y Clawdd (Present) SS99S - Ton Pentre (Present) SS99X - Ystrad Rhondda (Present) SS99D - Mynydd Blaenafan SS99I - Tarren Saerbren SS99N - Treorchy (Present) SS99T - Pentre (Present) SS99Y - Ferndale SS99E - Nant Gwair SS99J - Blaenrhondda SS99P - Treherbert SS99U - Maerdy SS99Z - Cwmaman ST06C - Limpert Bay ST06H - Breaksea Point (Confirmed breeding) ST06M - Watch House Point ST06S - Rhoose Point (Present) ST06D - Gileston (Present) ST06I - Aberthaw (Probable breeding) ST06N - Font-y-gary (Present) ST06T - Rhoose (Present) ST06Y - Porthkerry (Present) ST06E - RAF St Athan (Present) ST06J - Llancadle (Present) ST06P - Penmark ST06U - Curnix Farm ST06Z - Middleton Wood (Present) ST07A - St Mary Church (Present) ST07F - Coed y Colwyn ST07K - Llancarfan (Present) ST07Q - Walterston ST07V - Great Harriston (Present) ST07B - St Hilary (Present) ST07G - Tre-Aubrey ST07L - Llantrithyd (Present) ST07R - Bonvilston (south) ST07W - Dyffryn Gardens (Present) ST07C - Aberthin (Present) ST07H - Maes y Ward ST07M - Greenway (Present) ST07S - Bonvilston (north) (Present) ST07X - St Nicholas ST07D - Ystradowen (Present) ST07I - Welsh St Donats ST07N - Tre-Dodridge ST07T - Pendoylan (Present) ST07Y - Peterston-super-Ely ST07E - Tymaen ST07J - Keepers Lodge Farm ST07P - Hensol ST07U - Llwyngibbon ST07Z - Capel Llanilltern ST08A - Llanharry (Present) ST08F - Pontyclun (Present) ST08K - Miskin (Present) ST08Q - Groes-faen (Present) ST08V - Creigiau (Present) ST08B - Llanharan (Present) ST08G - Talbot Green (Confirmed breeding) ST08L - Llantrisant (Probable breeding) ST08R - Rhiwsaeson (Present) ST08W - Soar (Present) ST08C - Mynydd Meiros (Present) ST08H - Ynysmaerdy (Present) ST08M - Llantrisant Common ST08S - Beddau ST08X - Efail Isaf ST08D - Thomastown (Present) ST08I - Rhiwinder (Present) ST08N - Castellau (Present) ST08T - Upper Church Village (Present) ST08Y - Ton-teg (Present) ST08E - Tonyrefail (Present) ST08J - Mynydd y Glyn ST08P - Mynydd Gelliwion (Present) ST08U - Graig (Present) ST08Z - Rhydyfelin (Present) ST09A - Williamstown ST09F - Porth ST09K - Trehafod ST09Q - Pontypridd (Present) ST09V - Pont Sion Norton ST09B - Mynydd Brithweunydd ST09G - Ynyshir ST09L - Llysnant ST09R - Glyncoch ST09W - Cilfynydd (Present) ST09C - Tylorstown ST09H - Llanwonno ST09M - Ynysybwl ST09S - Carnetown ST09X - Abercynon ST09D - Blaenllechau ST09I - Darwonno (Present) ST09N - Perthcelyn ST09T - Ynysboeth (Present) ST09Y - Treharris ST09E - Coed Cae Aberaman ST09J - Fernhill ST09P - Mountain Ash ST09U - Merthyr Vale (Present) ST09Z - Cwm-Cothi ST16C - Friars Point ST16D - Barry Island (Confirmed breeding) ST16I - Barry Docks (Confirmed breeding) ST16N - Sully Bay (Present) ST16T - Swanbridge (Present) ST16Y - St Mary's Well Bay (Present) ST16E - Barry (Present) ST16J - Cadoxton (Possible breeding) ST16P - Sully (Confirmed breeding) ST16U - Cosmeston Lakes Country Park (Present) ST16Z - Lavernock (Present) ST17A - Goldsland (Possible breeding) ST17F - St Andrews Major ST17K - Dinas Powys ST17Q - Penarth ST17V - Penarth Head (Present) ST17B - St Lythans (Present) ST17G - Wenvoe ST17L - Michaelston-le-Pit ST17R - Llandough (Possible breeding) ST17W - Cardiff Bay (Present) ST17C - Drope ST17H - Culverhouse Cross ST17M - Leckwith (Present) ST17S - Grangetown (Probable breeding) ST17X - Butetown (Present) ST17D - Michaelston-super-Ely ST17I - Fairwater (Present) ST17N - Victoria Park (Confirmed breeding) ST17T - Canton (Confirmed breeding) ST17Y - Roath (Present) ST17E - Stockland ST17J - Danescourt ST17P - Llandaff North (Present) ST17U - Gabalfa (Present) ST17Z - Roath Park (Present) ST18A - Pentyrch ST18F - Radyr (Present) ST18K - Coryton (Present) ST18Q - Llanishen (Probable breeding) ST18V - Cyncoed (Present) ST18B - Gwaelod-y-garth (Present) ST18G - Taff's Well ST18L - Coed-y-wenallt (Present) ST18R - Thornhill (Present) ST18W - Lisvane (Present) ST18C - Coed y Gedrys (Present) ST18H - Nantgarw (Present) ST18M - Caerphilly Common (Present) ST18S - Wern Ddu (Present) ST18X - Coed Coesau whips (Present) ST18D - Upper Boat (Present) ST18I - Groes-wen (Present) ST18N - Caerphilly (Present) ST18T - Van (Present) ST18Y - Rudry ST18E - Abertridwr ST18J - Penyrheol (Present) ST18P - Energlyn (Present) ST18U - Bedwas (Present) ST18Z - Graig-y-Rhacca ST19A - Senghenydd ST19F - Cefn-llwyd ST19K - Llanbradach ST19B - Llanfabon ST19G - Mynydd Eglwsilan ST19L - Ystrd Mynach ST19C - Nelson (Present) ST19H - Parc Penallta Country Park ST19M - Hengoed (Present) ST19D - Trelewis ST19I - Gelligaer (Present) ST19N - Pengam ST19E - Taff Bargoed Country Park (Present) ST19J - Gelli-gaer Common ST19P - Bargoed ST26C - Flatholm ST26H - Flatholm (Present) ST27C - East Moors (Present) ST27H - Cardiff Flats ST27D - Tremorfa (Present) ST27I - Lamby (Confirmed breeding) ST27N - Rumney Great Wharf ST27E - Rumney (Present) ST27J - Pwll Mawr (Present) ST27P - Sluice Farm (Present) ST28A - Llanedeyrn (Present) ST28F - Llanrumney ST28K - St Mellons (Present) ST28B - Cardiff Gate (Present) ST28G - Began (Present) ST28C - Cefn Mably Woods (Present) ST28H - Bridge Farm ST28M - Michaelston-y-Fedw ST28D - Coed Cefn-pwll-du ST28I - Draethen (Present) ST28N - Rhiwderin ST28E - Machen ST28J - Upper Ochrwyth

Distribution map species lists

Breeding change maps

Species richness maps

© 2014 Glamorgan Bird Club

Breeding 1968-72

Status

Hectads


Possible

1

6%


Probable

0


Confirmed

9

53%


Total

10

59%


Winter 1981/82-1983/84

Status

Hectads


Present

16

94%


Breeding 1984-89

Status

Tetrads


Present

0


Possible

9

2%


Probable

4

1%


Confirmed

22

5%


Total

35

9%


Winter 2007/08-2010/11

Status

Tetrads


Present

240

59%


Breeding 2008-11

Status

Tetrads


Present

201

49%


Possible

11

3%


Probable

7

2%


Confirmed

14

3%


Total

233

57%