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The productivity of breeding raptors in the east of the Cairngorms National Park this season is encouraging and includes the hatching of a sea eagle chick on Balmoral, the first time that the species has successfully bred on the estate.
The breeding pair of sea eagles – also known as white-tailed eagles – have been observed on Balmoral for the last few years. Both adult birds carry satellite tags and close collaboration with the Royal Society for the Protection of Birds (RSPB) has allowed the Balmoral Ranger Service to follow their weekly movements during the breeding season. A healthy male chick has now hatched and been ringed. Three golden eagle chicks have also recently been ringed as part of long-term monitoring on Balmoral.
Balmoral Estate is a member of the East Cairngorms Moorland Partnership (ECMP) which has seen breeding success for golden eagles, hen harriers, red kite, osprey, peregrine and merlin, as well as short-eared owls, in 2021, across the various land holdings.
Richard Gledson, Estate Manager at Balmoral Estate said: “All at Balmoral Estate are delighted that sea eagles have nested successfully for the first time. A previous nesting attempt in 2017 on the same site sadly failed and we have had our fingers crossed since then. The birds have been with us for a couple of years, and we have been working closely with the North East Scotland Raptor Study Group who ringed the chick last week and with the RSPB who have been sending data from their satellite tags.”
Glenavon Estate – which is home to three pairs of golden eagles, including one of the highest nesting sites in Scotland – has had a golden eagle chick satellite tagged for the first time in recent years. Satellite tags are used by biological researchers on a variety of species including eagles and harriers, and provide valuable insight into their movement and survival. Golden eagle chicks have also been tagged on the Glenlivet Estate and Mar Lodge Estate.
Furthermore, Mar Lodge has hosted six hen harrier nests in 2021. One pair failed early in the season, but the other five nests all have chicks. Two hen harrier chicks have been satellite-tagged in collaboration with the RSPB. Evidence from satellite tags fitted to some of the harriers which are now breeding shows that the birds range widely, foraging across ground on neighbouring ECMP estates.
Last year, Mar Estate witnessed the first successful breeding attempt of sea eagles in Deeside for 200 years, but the relatively inexperienced pair failed this season at the hatching stage, with poor weather likely a contributing factor, however hopes are high for success with continued breeding efforts next season and beyond.
Dr Ewan Weston of the North East Scotland Raptor Study Group, who has carried out much of the satellite tagging on ECMP estates, commented: “This year’s raptor tagging on ECMP estates builds on a positive collaboration with the estates over recent years. Despite a very wet, snowy May, the general picture in the area is that raptors, particularly golden eagles, red kites and hen harriers have done well.”
The East Cairngorms Moorland Partnership is a landscape-scale collaboration between five sporting estates and the Cairngorms National Park Authority. The partnership seeks to deliver private interests alongside public benefits, including improving the conservation status of raptors, demonstrating best practice muirburn management, expanding areas of woodland and scrub and peatland restoration. Partners have been collaborating with a wide range of ecologists in the National Park.
Xander McDade, Convenor at the Cairngorms National Park Authority, said: “We are delighted to hear that productivity of raptors in the east of the National Park looks good for 2021. However, we know that we can still do more for the birds and are committed to finding ways of improving the conservation status of moorland raptors, along with other red and amber moorland bird species. This includes working closely with the five estates that make up the ECMP on a range of conservation measures.”
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