Mute Swan

Irish Name: Eala bhalbh
Scientific name: Cygnus olor
Bird Family: Swans
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Conservation status

Status

Resident at wetlands throughout Ireland.

Identification

Large white swan, with an orange-red bill with prominent knob on the forehead, black nostrils and cutting edges.

Voice

Despite the name not mute! Adults give a curious snorting or rumbling sound. Juveniles beg with high-pitched whistle. Hisses when alarmed. Does not call in flight, but a loud whisteling sound is produced by the wings.

Diet

Water plants, which these large birds can reach with their long necks at depths of up to one metre. Also graze on land and occasionally feed on small amphibians, snails and insects

Breeding

Clutch: 4-7 eggs (1 brood) Incubation: 34-45 days. Fledging: 120-150 days (precocial). Age of first breeding: 3 years. Breeds on lakes, ponds & rivers, and nests are a large mound constructed from reed stem and other aquatic vegetation, with seaweed being used in coastal locations.

Wintering

Widespread on lakes, ponds and rivers.

Monitored by

Irish Wetland Bird Survey (I-WeBS).

Blog posts about this bird

I-WeBS

New analysis charts fortunes of wintering waterbirds at a hundred Irish wetlands

  The fortunes of Ireland’s wintering waterbird species have been published for 97 lakes, rivers and coastal estuaries across Ireland. You can now see how different species of ducks, waders and other waterbirds are faring at your local wetland, and how that compares to the national trend.   Every winter, hundreds of dedicated bird surveyors count the waterbirds in their locality as part of the Irish Wetland Bird Survey (I-WeBS). The survey,which has been running since 1994, is funded by the National Parks and Wildlife Service (NPWS) and coordinated by BirdWatch Ireland. The winter months see hundreds of thousands of swans, geese, ducks, waders and other waterbirds come to Ireland to escape the freezing conditions in their Arctic breeding grounds. As a result, Irish wetlands are of international importance for a number of species.   Birdwatcher-looking-through-telescope
Over a thousand birdwatchers have contributed to I-WeBS since it began in winter 1994/95.
This study focused on 36 wintering waterbird species at 97 of the most closely-monitored wetland sites, spanning 15 counties across Ireland. The extent of increase or decrease for each species at each site was determined. Updated national trends were also produced. While national trends are produced at regular intervals, this is the first time that species trends for individual wetland sites have been published in this way. This information can now be used to better target conservation actions in particular counties and at specific locations and help ensure potential new developments don’t worsen the situation for wildlife in these vitally important areas.  

The full results of this ‘Waterbird Site Trends’ analysis can be viewed here, including links to view species trends at individual sites.

The new national trends for our wintering waterbirds can be viewed here.

  Declines The greatest declines were seen in diving duck species, namely Goldeneye, Pochard and Scaup, which dropped by 65-90% on average since the mid-1990’s, across the 97 sites analysed. Climate change and warming winter temperatures are undoubtedly one of the drivers of these declines, allowing these birds to spend the winter closer to their breeding grounds in northern Europe. At a more local level in Ireland, loss of habitat, changes to water quality, increased disturbance on lakes and in estuaries, and poorly situated developments all worsen the situation, meaning fewer and fewer of these birds return to us each year. Wading birds of the Plover family have also undergone huge declines of over 50%. Lapwing, traditionally referred to as the ‘Green Plover’ or Pilibín and often considered Ireland’s national bird, declined by 64% since the mid-1990’s. Their close relative the Golden Plover, which feeds on grasslands in every county in Ireland in the winter, have declined by a similar amount, as have their rarer coastal relative the Grey Plover. Ireland’s breeding Curlew population is well known to be teetering on the edge of extinction, with only around 100 pairs nesting here in recent summers. Our wintering population is much larger though, as Curlew from northern Europe migrate to Ireland from late summer to early spring, but these birds face similar threats throughout their range. Our wintering Curlew have declined by 43% since the mid-1990’s.   male-goldeneye-in-sea
Goldeneye - a diving duck species that has undergone large declines in Ireland.
  Health Check “We regularly do this sort of analysis at national level, providing a ‘health check’ to see how Ireland’s wintering waterbirds are doing”, said John Kennedy of BirdWatch Ireland, who led this research “but now we’re delving a bit deeper to see precisely where the problems are. Some species will be showing the same upward or downward trend wherever you look, but there are some wetlands where we see faster declines than we’d expect. That might be because of particular problems at key sites – loss of habitats, changes to water quality, increased disturbance from recreational activities, and similar issues. Equally, there are likely to be places where a species is bucking the national trend and doing very well, and there will be practical lessons to be learned there too.”  
Lapwing is considered by many to be Ireland's national bird, but their declines are cause for concern.
  Increases Black-tailed Godwit, a member of the same family as the Curlew that breeds in Iceland, has increased by 92% since annual monitoring began in 1994. Species such as Mute Swan, Little Grebe and Grey Heron, which breed on Irish lakes and rivers are all stable or increasing in number. One of Ireland’s most recent arrivals, the Little Egret, has shown a steady and significant increase since it arrived into Ireland 20 years ago and is now widespread across the entire country. Species with a mixed report card include the Light-bellied Brent Goose, which has increased overall but is now showing a recent decline. Numbers of Sanderling, which the Pixar short movie ‘Piper’ was based on, are 85% higher than they were when monitoring began, but have decreased by 24% in the last five years. Recent declines of this magnitude are cause for concern and there is a risk that longer term increases for some species could be quickly undone in a few short years. sanderling-taking-flight
Sanderling  have increased overall since monitoring began here, but shown recent declines.
  “Ireland’s waterbirds are indicators of the health of the wetland environment they use. These are sites that we depend on too – for drinking water, flood relief, agriculture, tourism, aquaculture and industry. As is always the case with this sort of research, it has answered some questions but poses many more, and we’ll be scrutinising these results in the months and years to come to decipher some patterns of change that might not be so immediately obvious.” Said John Kennedy. Scientific Officer Brian Burke said “We would encourage everyone to visit the website and take a look at how the birds are faring at their local site, and other sites in their county. When you see the numbers side-by-side with the national trend figures, you might be surprised to see how a species is faring closer to home. Of course, the next step is to ensure that these data are used by communities, local authorities and politicians, to protect our precious wetlands and all of the ecosystem benefits they’ve brought us for generations. Since the survey began in 1994, over 1,100 counters from across the country have given up their time to provide this data, amounting to more than 81,000 winter site visits. None of this would be possible without their dedication!” grey-plover-feeding-on-worm-prey
Grey Plover, a strictly coastal version of the more widespread Golden Plover and Lapwing, are faring poorly.
The results are also important in a planning context. I-WeBS Project Manager Lesley Lewis explains “An Appropriate Assessment (AA) is an assessment of the potential adverse effects of a plan or project (in combination with other plans or projects) on Special Areas of Conservation and Special Protection Areas, the latter often designated for migratory wintering waterbirds. These new site trends will therefore allow those completing AA to assess the current status of the waterbird species at the relevant sites. This is an important improvement to the process that will have implications for future developments across the country.” Dr Seán Kelly, waterbird ecologist at the NPWS who manages the I-WeBS contract added: “The Irish Wetland Bird Survey is an incredibly successful and valuable bird monitoring programme. The success of the programme is down to the hundreds of citizen scientists and NPWS and BirdWatch Ireland staff across Ireland who take part in the survey. The size, strength and extent of this bird monitoring community is simply fantastic, and I would like to thank every individual for their ongoing efforts. The survey has been running since 1994 so the resulting long-term dataset allows us to robustly monitor environmental change as it manifests in and impacts upon bird populations. I really encourage everyone to take a look at the report and consider the findings, at a local and national level. The data gathered under this survey allows us to further understand how and where conservation management and policies can be improved.”  

The new national trends for our wintering waterbirds can be viewed here.

The full results of this ‘Waterbird Site Trends’ analysis can be viewed here, including links to view species trends at individual sites.

Full details about the Irish Wetland Bird Survey can be found here.

Birds of Prey

BirdWatch Ireland urge people to report any signs of bird flu in their area

A number of cases of Avian Influenza (‘bird flu’) have been confirmed in wild birds in Ireland since the start of the month. There are no known risks to human health, and similarly this isn’t going to affect your garden birds, but please watch out for sick or dead waterbirds, birds of prey, or potentially large numbers of dead crows or starlings which may have died as a result of this virus. If you find any such birds, don’t touch them, but rather report them immediately to the Department of Agriculture via the link below. It is important that any potential cases of avian influenza are investigated and documented appropriately in order to monitor the spread of the virus.

Report any dead or sick waterbirds or birds of prey here.

  There are numerous strains and subtypes of the avian influenza virus that each vary in severity. The strain that has recently been detected in some wild birds in Ireland is Highly Pathogenic Avian Influenza (HPAI) H5N1, which spreads easily between birds and causes illness, with a high death rate. This strain had been detected in a number of European countries before arriving into Ireland this month as wild birds migrate southwards and westwards for the winter. BirdWatch Ireland are part of an early warning system with regard to surveillance for signs of disease in wild birds, together with colleagues in the National Parks and Wildlife Service (NPWS), the Department of Agriculture, Food and the Marine and the National Association of Regional Game Councils (NAGC).   What is the current situation with regards Avian Influenza in the Republic of Ireland? To date there have been confirmed mortalities from the H5N1 strain of highly pathogenic avian influenza in counties Galway, Roscommon, Offaly, Donegal and Kerry, with further cases under investigation in other counties. The birds known to have been infected so far are Whooper Swans, Greylag Geese, Peregrine Falcons and a White-tailed Eagle. In winter, waterbirds of a range of different species congregate together at wetlands across the country, which allows the virus to spread easily amongst waterbird flocks and between species. When these birds become sick, they are easy prey for raptors such as Peregrines and Eagles, hence these species are often infected also.   What are the signs to watch out for? Firstly, it’s important to be aware that the only wild birds expected to become infected at present are waterbird species (wildfowl, waders, gulls) and birds of prey. If you own chickens or other poultry then please consult the Department of Agriculture website for further advice. If you find a dead waterbird of bird of prey, where the cause of death isn’t obvious (e.g. car collision) then it’s best to report it to the Department of Agriculture, so it can be collected and tested. If you find a bird of these species that’s acting unwell or otherwise behaving strangely, then this too should be reported. It’s important to note that potentially sick birds should not be brought to a wildlife rehabilitator or the National Wildlife Hospital in Meath, as this could risk infecting the birds already in their care. If you find a sick bird, report it via this link first, and secondly you may want to call the Avian Influenza Hotline (076 106 4403 during office hours or 1850 200 456 outside office hours).   Should I stop feeding my garden birds? Although it is possible for garden bird species to get bird flu, they are at very low risk at present, for the simple reason that they don’t interact with the species currently infected (i.e. waterbirds). As such, there is no reason to stop feeding your garden birds. If the situation deteriorates and this advice changes, we will spread the word and ensure everyone knows.   What should I do if I own poultry? To date there have been no cases in poultry flocks in Ireland, but poultry owners should familiarise themselves with Department of Agriculture guidance on biosecurity and the new regulations introduced as a precautionary measure. It should be stressed that there is no food safety risk for consumers and that properly cooked poultry and poultry products are safe to eat.   What is the situation in Northern Ireland? Full details on restrictions for poultry flock owners, and where to report possible cases in wild birds in Northern Ireland, can be found on the DAERA website here.     Further information and updates are regularly made available on the Department of Agriculture website:

https://www.gov.ie/en/publication/50ce4-avian-influenza-bird-flu/

Similar Species

Bewick's Swan

Irish Name:
Eala Bewick
Scientific name:
Cygnus columbianus
Bird Family:
Swans

Whooper Swan

Irish Name:
Eala Ghlórach
Scientific name:
Cygnus cygnus
Bird Family:
Swans