Great Black-backed Gull Larus marinus
Winter abundance 1995–2000
Scarce migrant/winter visitor, breeds coastal north Europe south to northwest France, winters also inland in Britain
Hide topography
Show rivers
Show woodland
Show urbanisation
Contains Ordnance Survey data © Crown copyright and database right 2013
Atlas species lists
- Breeding distribution 1995–2000
- Summer abundance 1995–2000
- Winter distribution 1995–2000
- Winter abundance 1995–2000
- Breeding distribution 2007–2012
- Summer abundance 2007–2012
- Winter distribution 2007–2012
- Winter abundance 2007–2012
- Breeding distribution change
- Summer abundance change
- Winter distribution change
- Winter abundance change
More Great Black-backed Gull maps
- Breeding distribution 1995–2000
- Summer abundance 1995–2000
- Winter distribution 1995–2000
- Winter abundance 1995–2000
- Breeding distribution 2007–2012
- Summer abundance 2007–2012
- Winter distribution 2007–2012
- Winter abundance 2007–2012
- Breeding distribution change
- Summer abundance change
- Winter distribution change
- Winter abundance change
More maps for this atlas
Map explanation
This map shows the winter relative abundance of the species in Wiltshire, based on variation from the average, as revealed by the fieldwork for Birds of Wiltshire (Wiltshire Ornithological Society 2007).
Key
Relative to average
Nos tetrads
>50% fewer
0
0%
25-50% fewer
0
0%
Average +/- 25%
1
<1%
25-100% more
0
0%
>100% more
0
0%
Total
1
<1%
Not surveyed
Great Black-backed Gulls are confined to the north Atlantic region, breeding from Greenland, Iceland, Svalbard and Novaya Zemlya, south to Ireland, western Great Britain, northwest France, Fenno-Scandia and, in north America, from Quebec to New England. In winter they disperse south as far as western Iberia, the Azores and Florida.
In Great Britain they breed almost exclusively in coastal areas, with 85% of the population found in Scotland, while most of the rest are scattered around the Welsh coast and the southwest peninsula and the south coast of England. Non-breeding individuals in summer and over-wintering birds occur widely on coasts but also inland except in highland areas.
Great Black-backed Gulls were rare in Wiltshire until the mid 20th century when they began to appear more regularly, usually singly but occasionally in groups of between three and six and in one instance as many as 16 on a rubbish tip in January 1993. Although they have been recorded in the county in every month of the year, summer records are rare and there have been no records of breeding attempts. Birds of Wiltshire reported records in winter annually from the Cotswold Water Park (CWP) and from sites in Swindon as well as from one to three sites elsewhere in the county although the partial tetrad survey carried out over two winters between 1998 and 2000 produced records from only one tetrad, near the CWP. By contrast, WTA2 has winter records from 29 tetrads.
References
The following references are used throughout these species accounts, in the abbreviated form given in quotation marks:
“1968-72 Breeding Atlas” – Sharrack, J.T.R. 1976: The Atlas of Breeding Birds in Britain and Ireland. T. & A. Poyser
“1981-84 Winter Atlas” – Lack, P.C. 1986: The Atlas of Wintering Birds in Britain and Ireland. T. & A. Poyser
“1988-91 Breeding Atlas” – Gibbons, D.W., Reid, J.B. & Chapman, R.A. 1993: The New Atlas of Breeding Birds in Britain and Ireland 1988-91. T. & A. Poyser
“Birds of Wiltshire” – Ferguson-Lees, I.J. et al. 2007 : Birds of Wiltshire, published by the tetrad atlas group of the Wiltshire Ornithological Society after mapping fieldwork 1995-2000. Wiltshire Ornithological Society.
“Bird Atlas 2007-2011” – Balmer, D.E., Gillings, S., Caffrey, B.J., Swann, R.L., Downie, I.S. and Fuller, R.J. 2013: Bird Atlas 2007-2011: the Breeding and Wintering Birds of Britain and Ireland
“WTA2” – ("Wiltshire Tetrad Atlas 2 ") the present electronic publication, bringing together the Wiltshire data from “Birds of Wiltshire” and “Bird Atlas 2007-11”, together with data from further fieldwork carried out in 2011 and 2012.
"Hobby" - the annual bird report of the Wiltshire Ornithological Society.