The newsletter of the Goose & Swan Monitoring Programme news goose ISSUE No. 18 | AUTUMN 2019 What's hiding behind the hill? GPS tracking of Pink-footed Geese Latest results of GSMP surveys Goose News Issue18 pp.indd 1 05/09/2019 09:47 Editorial Welcome to the 18th edition of GooseNews. This edition marks the start of a season which new sites, so that we can try to ensure sees the 60th Icelandic-breeding Goose good coverage during each census. A Census (IGC; see page 15) and the sixth recent study of GPS tagged Pinkfeet has International Swan Census (see page 5) take shown how technology can help us locate new place. Both censuses monitor their respective survey sites; with data collected during the goose and swan populations at the flyway (i.e. project identifying a number of possible new international) scale; thus the data collected are Pinkfoot roost sites that we previously did not used to estimate the size of the whole population. know about (see page 6). However, these data, along with those from other goose and swan surveys, also contribute It is widely recognised that many bird surveys to national estimates and earlier in 2019, the would not be what they are without the most recent estimates for wintering waterbirds in considerable contribution from the networks of Britain were published - see page 29. volunteer observers. However, there are also teams of volunteers providing essential support Amongst the estimates listed for wintering geese, behind the scenes, often in roles that the largest by far is that for the Greenland / may seem less inspiring than being out Iceland Pink-footed Goose (510,000 individuals), in the field (see page 8), and to them we must one of the populations monitored by the IGC (see also remember to give our sincere thanks. page 14). Like other similar censuses, the IGC aims to cover as many sites used by the geese And so to all who contribute to goose and swan as possible in order to estimate the total number monitoring in Britain, Ireland and beyond, we of geese in the population. This means that we thank you for your continued support. need to keep an eye out for any changes in the distribution of the geese, particularly the use of Colette Hall 2 | goosenews | ISSUE NO.18 | AUTUMN 2019 Goose News Issue18 pp.indd 2 05/09/2019 09:47 Contents 2 Editorial 4 Survey dates 2019/20 6 What’s hiding behind the hill? 8 Volunteering backstage for the GSMP 10 Site focus: WWT Martin Mere Photo: Otto de Vries 12 Latest news from GSMP surveys 26 Capture and marking round-up 28 Conservation and research news goosenews | ISSUE NO.18 | AUTUMN 2019 | 3 Goose News Issue18 pp.indd 3 05/09/2019 09:47 Survey dates for 2019/20 Icelandic–breeding Goose Census (ICG) Greenland White-fronted Goose Census The IGC national organiser is The census is organised by the Greenland Kane Brides ([email protected]) White-fronted Goose Study (https://greenlandwhitefront.org). The coordinated census dates for autumn 2019 Please contact the organiser Tony Fox are as follows: ([email protected]) for further details about the census. Pink-footed Goose: 19/20 October and 23/24 November Count dates for the 2019/20 census are as follows: Iceland Greylag Goose: 23/24 November Autumn and spring coordinated censuses: 14–18 December 2019 and 14–18 March 2020 Ideally, all sites supporting Pink-footed Geese should We very much welcome counts from all other dates and be covered during the October and November times, but for the monthly counts we especially counts, whilst those holding Iceland Greylag Geese appreciate counts in the following periods: should be covered in November. 23–27 November 2019, 18–22 January We would like to encourage all counters at sites and 22–26 February 2020 within the range of Iceland Greylag Geese to also carry out a count during September if the site also supports British/Irish Greylag Geese. September counts are not strictly coordinated but ideally should be carried out Enter your counts online during the middle of that month, although any counts Counters taking part in the Icelandic-breeding made during September will be of value. Goose Census (IGC), the International Swan If you are unable to count on the above dates, please Census (ISC) or undertaking age assessments can contact either your Local Organiser or Kane Brides, so enter data online using WWT’s Waterbird Monitoring that we may try to arrange cover of your site by another Online website. counter. You will need to register to use the system at https://monitoring.wwt.org.uk/recording/, where Help needed to cover IGC sites help pages are available to guide you through the process of registering and entering counts. Recent data from tracking GPS tagged Pinkfeet have If you need any further information on how to use revealed a number of possible new roost sites for the website, please contact WWT’s Monitoring Unit these geese (see the article on page 6). Therefore, at [email protected]. we are looking for counters who would be willing to visit sites in Lanarkshire for the IGC in 2019 to investigate further. We are also looking for counters Reporting sightings in Lancashire and Angus to cover current IGC sites where a counter has retired. of colour-marked birds If you are a counter in one of these regions and you To report a sighting of a colour-marked bird, please first are interested in helping, please contact your Local refer to the European Colour-ring Birding website Organiser in the first instance. For any new counters or (http://www.cr-birding.org/) where a list of project for counters without a Local Organiser, please contact coordinators can be found, including for all WWT Kane Brides ([email protected]). projects. Observations of marked birds can be submitted directly to the relevant project coordinator or in some cases by submitting sightings into online databases. If you are unable to find a project that Find out more matches the bird you observed, please submit your details to the EURING Web Recovery Form at www. Visit WWT’s Waterbird Monitoring website at ring.ac. https://monitoring.wwt.org.uk/our-work/ If you would like to report a sighting of a colour- goose-swan-monitoring-programme/ to find out marked bird that has been ringed as part of a WWT more about the Goose & Swan Monitoring project, please email your sighting to Programme (GSMP), including detailed survey [email protected]. results and all editions of GooseNews. Further information about submitting a sighting of a Details about all the GSMP surveys, including colour-marked bird can be found on the WWT how to get involved, can be found on the website monitoring website at https://monitoring.wwt.org.uk/ at https://monitoring.wwt.org.uk/get-involved/. our-work/uk-waterbirds/goose-swan-monitoring- programme/colour-marking. 4 | goosenews | ISSUE NO.18 | AUTUMN 2019 Goose News Issue18 pp.indd 4 05/09/2019 09:47 International Swan Census 2020 at around 7,000 birds up until 2015 when there was a significant decline to just 4,392. Ireland has seen a January 2020 sees the next International Swan Census particularly large drop in numbers, with the census in (ISC) take place across Europe. The census, 2015 recording just 21 birds compared with a peak of coordinated by the IUCN SSC Swan Specialist Group, is 2,004 in 1990. carried out every five years and aims to estimate the The 2020 census will result in updated flyway-scale size and distribution of the three migratory swan population estimates for these two populations, as well populations in Northwest Europe: the Icelandic as for the NW European Whooper (found predominately Whooper, the Northwest Mainland Europe Whooper and on mainland Europe) which, like its Icelandic the Northwest European Bewick’s. The ISC in Britain, counterpart, has been increasing. Results from the Ireland and Iceland is coordinated by WWT in census will also help researchers determine any collaboration with I-WeBS, the Irish Whooper Swan conservation needs for these populations across their Study Group (IWSSG) and our Icelandic colleagues, flyways; particularly for Bewick’s Swan, which in 2015 and with generous help from the WeBS network. was classified as Endangered in the European Red List Although WeBS and I-WeBS cover a large proportion of Birds1 due to the decline in the population, and for of sites frequented by Whoopers and Bewick’s, in order which there is an AEWA International Single Species to attain complete coverage and a population estimate, Action Plan2 in place. we also need to survey areas that are not regularly covered or not covered at all by these schemes, such as feeding sites in agricultural areas. For some key sites, The census in Britain and Ireland is due to take place there may also be a need to undertake counts of on the weekend of 11/12 January 2020, roosting birds at dawn or dusk (rather than the daytime corresponding to the International Waterbird Census. counts) in order to obtain better estimates. The ISC also involves collecting additional information on breeding If you would like to get involved in the census, please success and habitat use of the swans. Therefore, the contact: census requires additional help and support from the Britain: Kane Brides (WWT) volunteer bird recording networks in Britain and Ireland. [email protected]. Since the first census of the Icelandic Whooper Swan population took place in 1986, the population has been Republic of Ireland: Brian Burke (I-WeBS) continually growing.