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Our work here
17 May 2007
Mill Dam protects a marshy wetland on Shapinsay in Orkney. The RSPB is managing the reserve for the benefit of breeding waders and waterfowl, and wintering whooper swans.
Much wetland habitat has disappeared from Orkney in recent times, so we aim to restore this wetland in order to provide a sanctuary for these birds. But first we must undertake a feasibility study of how to regain hydrological control and improve water quality.
Reviving wetland
We are working to meet breeding targets for key species, including pintail, shoveler, water rail, lapwing, redshank and snipe. We aim to restore the following key habitat features: areas of open water; emergent vegetation in which to feed, nest, and shelter during spring and summer; an even balance of open water and vegetation as winter feeding and roosting sites; and muddy areas for passage waders.
Recent digger work created ditches and pools and opened up areas that where heavily encroached by vegetation. The main ditch linked the ponded area with the dam and restored water level control. The southern part of the reserve is much improved but further work will continue in the northern areas.
Winter waterfowl
We are working to maintain target numbers of wintering waterfowl, including whooper swans. Pending the findings of our feasibility study, measures will include restoring open water between October and March to its original 1993 levels, and meeting new water quality targets.
Managing marsh
Pending the feasibility study, we will secure areas to dump any material removed during habitat restoration work, creating potential habitat for corncrakes. We will also aim to meet new water quality targets, and will graze the surrounding grassland to create a sward height of 5 cm or less over 30% of the area.
Keeping tabs
We will continue to inform our management strategies by monitoring bird populations and water quality. We will also contribute to national surveys, including wildfowl counts, and will aim to support an MSc project on water quality and nutrients. Aerial photographs will help us to map vegetation changes.
Working with people
We will continue to maintain our hide and car park for visitors, ensuring easy access and a good wildlife experience for all. Signage and patrols will allow us to restrict access to other parts of the reserve. We will also prevent wildfowling on the reserve, and any disturbance during the breeding season.