speciesaccounts_pinkfootedgeesePink-footed Goose

Anser brachyrhynchus

The Greenland/Iceland Pink-footed Goose population winters almost exclusively in Britain. This population breeds primarily in central Iceland with smaller numbers also occurring along the east coast of Greenland.

There is also a smaller population of Pink-footed Goose which breeds in Svalbard and winters in the Low Countries (the Netherlands, Belgium, Luxembourg and, increasingly, Denmark).

The Goose & Swan Monitoring Programme only monitors the Greenland / Iceland population.

  • Conservation Status

    Global status (IUCN Red List of Threatened Species)

    African-Eurasian Waterbird Agreement (AEWA)

    European status (European Red List of Birds)

    The Birds Directive (European Commission)

    UK status (Birds of Conservation Concern)

    UK quarry species (Wildlife & Countryside Act 1981)

    Least Concern

    B2a

    Least Concern (Europe and EU27)

    Annex II (Part B)

    Amber

    huntable during open season

    Population Status

    Flyway population size (CSR 6; Wetlands International 2015)

    GB estimate (Musgrove et al. 2011)

    GB trend (SUKB 2016)

    Breeding success (GSMP survey)

    372,000 individuals

    360,000 individuals

    Long-term trend (1988/89 – 2013/14): 108% increase
    Ten-year trend (2003/04- 2013/14): 37% increase

    Generally varied between 17% and 23% between 2004 and 2014.

    Summary statistics

    Annual census-derived estimates of the population size, percentage of young (%) and mean brood size (young per successful pair) of Greenland/Iceland Pink-footed Goose, 2003-2016. Data collected through the Icelandic-breeding Goose Census.

    Autumn/winter Estimate of population size Percentage of young (%) Mean brood size
    2016 481,341 18.8 1.75
    2015 536,871 18.8 1.89
    2014 393,170 19.4 2.01
    2013 372,074 17.3 2.16
    2012 359,175 21.1 2.30
    2011 260,325 8.5 1.77
    2010 297,798 19.9 2.32
    2009 364,212 17.3 1.87
    2008 351,188 22.9 2.08
    2007 284,405 20.0 2.27
    2006 230,123 19.3 2.20
    2005 302,774 18.1 1.7
    2004 276,644 19.4 2.1
    2003 280,998 19.0 2.19

     

    Reference

    Musgrove, A.J., G.E. Austin, R.D. Hearn, C.A. Holt, D.A. Stroud & S.R. Wotton. 2011. Overwinter population estimates of British waterbirds. British Birds 104: 364-397.

  • Greenland/Iceland Pink-footed Geese breed primarily in central Iceland and in smaller numbers along the east coast of Greenland. Many thousands of non-breeding birds migrate from Iceland to northeast Greenland to moult. Migration begins in early autumn to the wintering grounds, which are almost entirely in Britain. Very small numbers also occur in Ireland. From mid April, birds begin to leave Britain and stop over in southern Iceland before departing for the breeding grounds, where they arrive from mid May (Mitchell & Hearn 2004).

    flyway map pinkfoot

    Flyway of the Greenland/Iceland Pink-footed Goose

    Arrival in Britain begins in September particularly in northeast Scotland, at places such as Loch of Strathbeg, Aberdeenshire, and there is rapid movement further south as far as Lancashire. As winter progresses many of the birds in east central Scotland move south to England. Numbers in the southernmost wintering area of Norfolk have increased considerably since the early 1990s, and now up to half of the population occurs there in mid winter.

    The traditional main winter habitat is thought to have been saltmarsh, but from the late 19th century the species has moved inland to feed on farmland. In recent decades birds have fed on valuable agricultural crops, such as fertilised grassland and cereals, and have been frequently accused of reducing crop yields and puddling soils. In autumn when they feed on fields containing post-harvest root crops, such as potatoes and waste sugar beet, they do no harm, but during mid winter and spring they graze on growing cereals and come into direct competition with livestock for the spring growth of grass leys. Local feeding studies have demonstrated seasonal changes in the diet of Pink-footed Geese apparently responding to, and in part driven by, seasonal changes in the habitats available.

    Reference

    Mitchell, C. & R.D. Hearn. 2004. Pink-footed Goose Anser brachyrhynchus (Greenland/Iceland population) in Britain and Ireland 1960/61 – 1999/2000. Waterbird Review Series, The Wildfowl & Wetlands Trust/Joint Nature Conservation Committee, Slimbridge.

     

  • Icelandic-breeding Goose Census

    The Greenland/Iceland Pink-footed Goose population is monitored through the Icelandic-breeding Goose Census; an international census undertaken in Britain, Ireland, Iceland, Norway and the Faeroe Islands. The census is undertaken annually and involves coordinated counts carried out in autumn and early winter.

    Results from the census are presented in annual reports, which can be downloaded from the Reports & newsletter page.

    Find out more about the Icelandic-breeding Goose Census

    GSMP age assessments

    The annual breeding success of the Greenland/Iceland Pink-footed Goose population is monitored through age assessments that are undertaken annually throughout the autumn and early winter. Counters record the number of first winter birds present within a flock and individual brood sizes (i.e. how many young in each family group).

    Results from these age assessments are presented on the ‘Latest results’ tab, and a summary table can also be found on the ‘Status summary’ tab.

    Find out more about age assessments

  • Results for 2016/17 [added August 2017]

    Abundance

    The 57th consecutive Icelandic-breeding Goose Census took place during autumn and winter 2016, providing information on the abundance and distribution of Greenland/Iceland Pink-footed Geese. A full account of the census can be found in Mitchell & Brides (2017). Counts were conducted by a network of volunteer observers and professional conservation staff over the weekends of 22/23 October and 19/20 November 2016. Coverage in the UK was good although lower than the preceding year, with 102 sites visited in October and 100 in November. Outside the UK, counts were made at several sites in Iceland during October, when some birds had yet to leave breeding areas.

    Totals of 481,341 and 363,574 Pink-footed Geese were counted in October and November, respectively (Table 1). The total numbers counted in these months were 9.3% lower and 34.6% higher than the respective unadjusted counts in the previous year. Coverage was good and no estimated counts needed to be added to the total. The peak winter total in October was used to derive a population estimate of 481,341 geese. This represents a decrease of 10.3% since 2015 (Figure 1), when a record population size of 536,871 individuals was estimated.

    A mass arrival of Pink-footed Geese into Britain occurred before the October 2016 count weekend. A fifth of the population had arrived in both East Central Scotland and Southwest Lancashire by the middle of the month. Only a 75% of the October count was recorded in November, with west England, for example, falling from holding a fifth of the October count total to just 8.8%

    Table 1. Regional distribution of Pink-footed Geese during October and November 2016 (nc = not counted, or no count received).

    Region October November
    Iceland 8,000 nc
    Faroe Islands nc nc
    Ireland nc nc
    North Scotland 68,848 41,660
    Northeast Scotland 74,755 81,599
    East Central Scotland 91,890 76,091
    Southeast Scotland/northeast England 51,672 30,481
    Southwest Scotland/northwest England 23,027 11,304
    West England 93,313 42,420
    East England 69,836 80,019
    Total Counted 481,341 363,574
    Estimated counts
    Adjusted total 481,341 363,574
    Population estimate 481,341

    Figure 1. Annual census-derived estimates of Pink-footed Goose population size, 1960–2016. Five-year running mean shown as red line. (e.g. mean for 2014 is from population estimates for 2012–2016).

    Breeding success

    Between mid-September and late November, a total of 22,533 Pink-footed Geese, in 34 flocks, was aged at various localities throughout Scotland and England. This sample, expressed as a percentage of the 2016/17 census-derived population estimate, was 4.7%. The brood size of 592 families was also determined during this period.

    Breeding success was similar to the mean for the previous decade, with 18.8% young (mean 2006–2015: 18.5% ± 1.2 SE) (Figure 2). The mean brood size of successful pairs was 1.75 juveniles, which was lower than the mean recorded during the previous ten years (mean 2006–2015: 2.09 ± 0.06 SE).

    Age counts were taken in several regions, but at different times during the autumn. This leads to differences in the percentage young and mean brood sizes recorded both spatially and temporally. Traditionally, all age counts have been collated and overall figure calculated, but the results from autumn 2016 suggest that there is some variation in age assessments both geographically and temporally and collating all the figures masks these differences.

    Table 2. The percentage of young and mean brood size of Pink-footed Geese in autumn 2016.

    Region Time period Total aged Percentage of young (%) Number of broods Mean brood size
    North Scotland Early Nov    869 23.3   10 2.30
    Northeast Scotland Early Oct 1,500 26.2   48 1.94
    Late Oct 1,000 26.0   16 1.88
    Late Nov    500 21.2     3 1.67
    East Central Scotland Late Oct 3.307 19.9     1 2.00
    Early Nov 1,369 19.7     3 3.00
    West England Late Sept 4,346 15.2   20 2.05
    West England Early Oct 2,366 19.3 208 1.71
    Late Oct 3,329 18.2 172 1.69
     East England Late Oct     107 35.5  12 1.91
    Early Nov 3,840 15.2  99 1.68
     Overall 22,533 18.8 592 1.75

    Figure 2. The percentage of young (blue columns) and mean brood size (red circles) of Pink-footed Geese, 1960/61–2016/17.

    Discussion

    There was an influx of large numbers of Pink-footed Geese into northern Britain in the weeks prior to the mid-October count weekend. The number of sites holding more than 1% of the 2016 population estimate (4,813 birds) was 30 in October and 21 in November revealing a breakup in the mass concentrations soon after arrival. Seventeen sites held over 10,000 birds in October, and 12 in November. Combined counts from the 30 sites exceeding 1% of the population estimate accounted for 89.0% of the total October count and numbers at the top five sites alone held 33.5% of the population estimate.

    In October, high numbers were recorded at Montrose Basin, Angus, which held 42,840 birds (8.9% of the population estimate), Loch of Skene, Aberdeenshire (34,340, 7.1%), Beauly Firth, Highland (30,300, 6.3%), WWT Martin Mere, Southwest Lancashire, (30,050, 6.2%), the Alt Estuary, Southwest Lancashire (23,893, 5.0%), Solway Firth (22,927, 4.8%), Morecambe Bay, Southwest Lancashire (21,850, 4.5%), Hule Moss, Borders (15,900, 3.3%) and West Water Reservoir, Borders (15,300, 3.2%).

    It is well established that some key wetland sites support higher numbers of geese soon after they arrive in northern Britain, and numbers decline as geese move south within Scotland or onto Lancashire and Norfolk. However, the low number counted in the November census (75% of the October count) was remarkable in how few birds were counted.

    The 2016 population estimate of 481,341 was 10.3% lower than the figure for October 2015 (536,871) and the second highest population estimate ever recorded. Breeding success in 2016 was about average and, since in recent years it appeared to be compensating for annual mortality, it is likely that the 2016 population estimate was an underestimate, with more birds still in Iceland than counted. Assuming steady growth in the population the annual rate of increase since 1987 has been at about 3.0% per annum.

    Pink-footed Goose breeding success in summer 2015, at 18.8%, was unremarkable and similar to the long-term average of 18.5% (+ 1.22 SE) over the most recent ten years. The average productivity was also confirmed by the proportion of young in the Iceland hunting bag; at 27.0%, this was just lower than the recent average (30.0%) for the ten year period 2006 to 2015 (A. Sigfússon in litt.). Hunting of Pink-footed Geese in Iceland appears stable with 13,661 shot there in 2015 (the year for which the most recent data are available). Unfortunately, no comparable data exist for the number shot in the UK.

    Thus, it must be concluded that since 2009/10, the annual autumn IGC counts have probably underestimated the true number of Pink-footed Geese within the Iceland/Greenland population, apart from in 2015/16. The breeding range and abundance of Pink-footed Geese in Iceland and north and east Greenland have increased in recent decades, coincident with the population increase. However, it is apparent that the surveillance undertaken to track the population is markedly different to the situation up to the early 2000s. In some years since 2000, more roosts, that are not counted, are probably being used, and the timing of the IGC October count needs to be carefully chosen to avoid large number of birds remaining in Iceland. Pink-footed Geese tend to leave the highlands of Iceland once the first snow falls in late September. The timing of the departure from Greenland is largely unknown. Any change in the timing of early autumn snowfall, caused by climate change may be affecting the dates the geese arrive in the UK.

    Acknowledgements

    As ever, thanks are extended to the many IGC counters who provided the basis of the population assessments. Of particular importance is the role of the Local Organisers. Goose count information was also provided by G. Gudmundsson and A. Sigfússon from Iceland. Ian Patterson and Lee Bailey kindly provided additional age counts.

    Reference

    Mitchell, C. & K. Brides. 2017. Status and distribution of Icelandic-breeding geese: results of the 2016 international census. Wildfowl & Wetlands Trust/Joint Nature Conservation Committee Report, Slimbridge.

  • Previous annual results will be archived here. Annual Icelandic-breeding Goose Census reports can be found on the Reports & newsletter page.

    2015/16 Results 

    2014/15 Results

    2013/14 Results

    2012/13 Results

    2011/12 Results

    2010/11 Results

    2009/10 Results

    2008/09 Results

    2007/08 Results

    2006/07 Results

    2005/06 Results

  • Background

    In the 1950s, WWT initiated a study into the population dynamics of Pink-footed Geese. The first capture was of seven in southwest Scotland on 22 March 1950, and the following winter a further 686 were marked. By the end of the decade, some 11,844 had been newly ringed in northern Britain. Two expeditions to the breeding grounds in central Iceland caught 1,151 flightless Pink-footed Geese in 1951 and a remarkable 8,745 in 1953. The geese were marked with metal rings only but generated many recoveries with rings being returned by wildfowlers.

    A second phase of marking began in the late 1980s, with renewed interest in the fortunes of this population as numbers were increasing. The birds were marked in wintering areas, primarily WWT Martin Mere and Loch Leven, with either engraved plastic leg rings or neck collars. The highest number caught was 348 in 1988 and between 1987 and 2016, a total of 3,345 had been marked. A further 41 birds were caught in Iceland in July 1987. Then, between 1996 and 2000, WWT joined colleagues from the Icelandic Institute of Natural History to capture geese on their breeding grounds in north and central Iceland. This resulted in a further 3,246 newly ringed birds, the vast majority of which were fitted with neck collars. In recent years, captures have been much reduced but have continued in Britain thanks to efforts by the Tay Ringing Group and the Grampain Ringing Group.

    During the winter, Pink-footed Geese are usually caught using large nets fired over grazing flocks; these were initially powered by rockets, but since the 1980s, cannons have been used. During the summer months on the breeding quarters, goslings are growing their first flight feathers and the adult birds become flightless whilst moulting and replacing their flight feathers. It is, therefore, possible to round up the flightless geese (rather like rounding up sheep) into netted corrals.

    In total, more than 65,000 sightings of colour-marked birds have been made since the late 1980s. These individually-marked birds, some of which have been seen more than 50 times throughout their lifetime, have allowed a detailed understanding of the individual pairing and breeding success, survival rates and site selection. This information, along with other demographic data from the Goose & Swan Monitoring Programme, has been used to explain changes in population size and distribution (e.g. Frederiksen et al. 2004).

    Resightings of colour-marked Pink-footed Geese have led to a number of important discoveries concerning their movements and individual use of the flyway. This work has confirmed that the geese migrate from breeding grounds in Greenland and Iceland, staging at important sites in east Scotland before perhaps up to a half of the population migrate south to Lancashire and Norfolk, though there is almost certainly also some direct arrival into Lancashire.

    Ring combinations used
    Grey neck collar Orange leg ring White leg ring
    Alpha/numeric A3 – U7  –  –
    Alpha/alpha AA – ZZ  –  –
    Numeric/numeric  –  – 01 – 99
    Numeric/alpha 3A – 7L  –  –
    Alpha/alpha/alpha AAA – TZZ  AAA – BZZ  AAA – TYZ

    If you see any colour-marked Pink-footed Geese with these combinations please send your sightings to colourmarkedwildfowl@wwt.org.uk

    Reference

    Frederiksen, M., R.D. Hearn, C. Mitchell, A.Þ. Sigfússon, R.L. Swann & A.D. Fox. 2004. The size and dynamics of Icelandic-breeding goose populations: a reassessment of the evidence. Journal of Applied Ecology 41: 315-334.

  • Survey results

    Icelandic-breeding Goose Census reports: See the Reports & newsletter page

    Wetland Bird Survey Alerts

    Wetland Bird Survey annual report

    Relevant publications

    Mitchell, C. 2012. Mapping the distribution of feeding Pink-footed and Iceland Greylag Geese in Scotland. Wildfowl & Wetlands Trust / Scottish Natural Heritage Report, Slimbridge. Download

    Mitchell, C. & Hearn, R.D. 2004. Pink-footed Goose Anser brachyrhynchus (Greenland/Iceland population) in Britain and Ireland 1960/61 – 1999/2000. Waterbird Review Series, Wildfowl & Wetlands Trust / Joint Nature Conservation Committee, Slimbridge. Download

    Other relevant material

    Birdlife International Species factsheet

    British Trust for Ornithology: BirdFacts

    Review of Goose Management Policy in Scotland 2010

    Hunting in Iceland: The numbers of Pink-footed Geese hunted in Iceland are available here.

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