By Rachelle Regan, RSPB Hodbarrow Tern Protection Assistant
Another season has begun at RSPB Hodbarrow and preparations for the arrival of the Terns started in March. The lagoon island expansion works that took place over winter 2020-2021 meant an extra 130m of anti-predator fencing that needed some repairs after recent periods of strong north westerly winds. This involves donning chest high waders, requires steading footing and a good amount of perseverance! We hope the birds are grateful.
It is not just the Terns that have benefited from the fencing, but since it’s installation in 2016, Eiders have begun nesting on the island, increasing from 18 pairs in 2018 to an amazing 51 pairs in 2021! Numbers are looking good again this year with the first few nests spotted on the 18th April.
In addition to the anti-predator fencing, we install trail cameras on the island to monitor for predator presence. These may pick up any activity missed or unseen and inform immediate actions and future management. They also occasionally produce some stunning sunset photos!
Another important aspect of the site set up is signage. Myself and the other Tern Protection Assistant, Chris, will be on site as much as possible throughout the season monitoring disturbance and talking to visitors. Signs, however, are vital to inform those we do not get a chance to speak to and clearly mark out the areas that are off limits to allow the birds to nest undisturbed. This year’s signs have been created as part of the LOTE project in partnership with Cumbria Wildlife Trust, Natural England, RSPB and National Trust to help protect ground nesting seabirds and waders along the Duddon Estuary and Morecombe Bay.
As well as chick shelters that provide the Tern chicks with predator protection and shelter from the weather, something new for this year is the installation of Red-breasted Merganser nest boxes made by the RSPB Campfield Marsh volunteers. At least three pairs bred in 2020 and hopefully these nest boxes will encourage them again this year.
Now the preparations are complete the monitoring begins. Nearly 800 Sandwich Terns have already arrived back from their wintering grounds in Namibia and South Africa, joined by the first Common Tern on the 12th April and Little Tern on the 13th April.
This will be my third season at Hodbarrow and my third year living in West Cumbria year-round. The obvious answer to why I enjoy this role is my love of Terns! Their beauty and their energy is captivating, I can watch them for hours on end and never grow tired. In this role I get to spend most of my time outdoors and no two days are the same. The change in weather, tides and seasons mean there is always something to see, from the birds to the insects to the unique flora. You have the sea and Duddon estuary on one side and the mountains of the Lake District on the other, there’s no such thing as a bad view no matter which way you are facing! The Cumbria and Northern England RSPB team are another reason why I enjoy this role and keep coming back, for me the people you work with are just as important as the work itself, and they are excellent team of supportive and knowledgeable people.
I am very much looking forward to another season, hopefully one full of sunshine and Tern chicks!
By Audrey Jost - Assistant Warden at RSPB Seasalter Levels
Works are coming to an end at Seasalter Levels. Machines are slowly leaving the site whilst rills and scrapes fill up with water, making the landscape unrecognisable from 6 months ago.
Five hydrological units have been created, where water levels will be controlled by mechanical pumps that extract water from the surrounding ditch network and disperse it into the fields in order to provide the right habitat conditions for breeding waders.
The changes in the landscape provided immediate results wildlife-wise. Lapwings are now a regular sighting across the site, with a flock of 142 observed during the last wetland bird survey. Redshank, wigeon, curlew, green sandpiper, teal and shoveler are further examples of recently seen species. We even spotted a juvenile golden plover!
As most breeding wetland birds are ground nesters, they are very vulnerable to predation, notably by foxes. In order to boost the fledgling rate of youngs, we installed a 1.8 kilometre long anti-predator fence on part of the reserve. The fence is buried in the ground and cranked towards the outside at the top to prevent predators from digging and climbing respectively.
In addition to the anti-predator fence, the infrastructure and associated fencing installation to allow cattle grazing of the site is in progress and is due to be completed by March 2022. We also increased the number of corrals from 1 to 4, which will help with cattle movement across the site.
As the project is wrapping up, it is giving way to a time of recovery and monitoring. It has been an intense year for the reserve and it will take a few more years for it to fully reach its potential. A huge thank you to our funders, the reserve team and the contractors for making this project a reality!
By Annette Salkeld, RSPB North Suffolk Coast Reserves Warden
An exciting three-year project is currently underway to rejuvenate the iconic Minsmere Scrape to benefit breeding, passage and overwintering birds and to improve viewing opportunities.
Drone footage of before the works by Jeff Kew
The Scrape was originally created in the 1960s as a series of both brackish and freshwater lagoons with islands and remains so to this day. Much work is needed to keep the Scrape in top condition and this project will give us the opportunity to make a big impression. The project has been made possible through funding from the EU Life+ project and the National Grid Landscape Enhancement Initiative.
The first year’s work, which involved adding shingle to islands in front of Public Platform, has been completed and is looking fantastic. This will provide nesting habitat for ground nesting shingle loving birds, including little, Sandwich and common terns. The beach at Minsmere used to support breeding little tern, but, as a result of coastal change along the East Anglian coastline, it has been eroding and is no longer a suitable nesting habitat for these endangered birds which stopped using it as a breeding site nearly 15 years ago. It is hoped that by providing alternative habitat on the Scrape they can be encouraged to breed regularly at Minsmere again.
Time lapse of shingle being spread on the island by Lou Chapman
The work due to be carried out in years two and three (autumn 2022 and 2023) focus in on East Scrape and West Scrape in turn. The aim of this part of the project is to create new, improved islands, as well as changing the layout of the lagoons by removing or building up the dividing bunds. An area of encroaching reeds will also be removed which in turn will increase the area of lagoon habitat. By doing this we will improve the islands for breeding birds as well as maximising the views of the birds from the hides. Rejuvenation of the lagoons will also ensure that the Scrape remains a mecca for passage waders: 52 species have been recorded at Minsmere with an average of 32 species visiting each year.
New water control structures will be installed to enhance hydrological management, enabling us to run the lagoons at different water depths and improving our ability to move water around the site. This is particularly important in flood and drought conditions.
The work should also benefit the iconic avocet which was the target of the original Scrape creation project and remains a top priority and visitor attraction. The timing is perfect as we celebrate the 75th anniversary of the reserve this year!
The RSPB Minsmere Facebook and Twitter accounts will be kept updated with progress on this fascinating project so why don’t you connect with Minsmere through social media and keep informed on the great work happening on the reserve.
Blog by David Mason, National Trust Ranger - Suffolk and Essex Coast
‘Increasing the extent and health of the saltmarsh area improves biodiversity and provides a range of other ‘ecosystem services’ (things that saltmarsh delivers for society) such as natural flood allevation, reductions in wave energy, spawning and nurseries for fish, providing food and shelter for birds, and locking up carbon dioxide to reduce the effects of climate change.’
I write this, the first Ranger’s blog from the Northey LOTE project, after visiting Northey Island on the Blackwater Estuary on the Essex coast. It was a bright November afternoon on a falling tide and as I approached the tidal causeway that links it to the mainland the last Lapwing and Dunlin were leaving the causeway to feed on the newly exposed mud. In the distance a flock of Golden Plover were glowing in the sunlight, reflected in the glistening mudflats. This is a spectacular place to see coastal birds when large flocks of waders and wildfowl gather on the estuary to feed and roost.
Several years ago, I saw c.5000 Brent Geese land on a site on the Suffolk coast during an October storm as they came in to land for shelter, skein after skein, on their migration South. They left the next morning when the weather cleared and I wondered if I had dreamed it!
I had heard that the Blackwater Estuary was a hotspot for them and have been delighted since starting work on the Essex coast last November to see where they were heading: Northey is a refuge for them in the winter where they roost and graze on the grass fields and on the saltmarsh as the tide comes up. In February I spent a happy morning clearing a footpath for the new circular visitor route we put in place this year, working with hand tools to minimise disturbance, while the geese chattered quietly in the field nearby.
I first visited the site in 2019 as the work to realign the South Embankment was being undertaken. This work was finally completed this year after delay in 2020. The mud from the embankment was placed in the ditch behind it (from where it had originally been dug in the mid-1800’s) to reform the natural landscape; the realigned area has now been naturally colonised by a wide range of saltmarsh species such as sea purslane, samphire, sea aster and sea beet as the tide has flooded the area, bringing in seed from the surrounding area. This area grades into a rising grassland bank which as sea levels rise will become new saltmarsh but now provides a rare transitional area between the saltmarsh and terrestrial grassland.
Now the pressure of coastal squeeze has been reduced, it is also notable that the saltmarsh in front of where the embankment was (which was heavily eroded) is also showing some signs of recovery with sediment depositing and new saltmarsh vegetation growing. I am impressed at how quickly this has established from bare mud. Allowing the coastal processes to function naturally without the constraints of man-made structures seems to be key. There is an increasing urgency to carry out more of this work for nature conservation as existing saltmarsh is rapidly eroding due to sea level rise and coastal squeeze on saltmarsh between the tide and coastal defences.
The island has been busy with contractors this year and new habitat and visitor facilities have been created and installed in preparation for future realignment of other embankments. Volunteers from the Essex and Suffolk National Trust group helped in maintaining the visitor route and picked up eight bags of litter from the foreshore.
There are a small number of water voles that live a marginal existence on Northey Island. The water voles’ homes and their numbers here have recently suffered from flooding from the sea (such as in 2013 and 2017/18) and hot dry summers. Part of our work in adapting to climate change and sea level rise is to create a new watery habitat for them. A new pond and ditch system has been created on higher ground which will provide a safer, more sustainable future home for Water Vole.
Coir rolls with pond plants embedded have been placed which it is hoped will provide food and shelter for the voles and other wildlife when they become established. This is overlooked by a new hide where visitors will be able to look over the pond, a new scrape and establishing saltmarsh.
A new scrape created this summer has filled with water and is already attracting Lapwing, Teal and Curlew amongst others.
In some areas dredged sediment from elsewhere in the estuary is being used to increase the resilience of the marsh. The adaptation of the coastal processes this achieves will prevent further erosion of saltmarsh in these areas. Eroded creeks that were bare mud a few years ago are already building up with natural silt deposited by the tide and recolonising with saltmarsh plants. The estuary side of the bank in this area includes some areas of shingle which provide another niche habitat and attracted 49 Ringed Plover in August, as noted on the regular bird (WeBS) count.
All in all it has been a fascinating year seeing the work progress and habitats develop and sharing it with visitors and volunteers and now you.
Blog by Audrey Jost - Assistant Warden at RSPB Seasalter Levels
Seasalter Levels is an RSPB reserve located in the South East of England, north of Canterbury. Acquired in 2007, the Levels were first constituted of only one unit named LNR (Local Nature Reserve). Since then, thanks to the efforts of the Seasalter Partnership (comprising RSPB, Natural England, Canterbury City Council and Swale Borough Council), the Levels have expanded to include four new management units (Whitstable Bay Estate, Monkshill, Alberta and Vikings Estate), increasing its overall size from 71.5 ha to 290 ha.
Constituted of mostly lowland wet grassland habitat, the Levels have, over the years, experienced a lack of appropriate management, leaving the area in poor condition for breeding waders and wintering wildfowl.
Thanks to funding from the Green Recovery Challenge Fund and the EU LIFE project, a large-scale restoration project of 228 ha of the reserve was able to be put in motion.
The project includes the creation of new topographic features aimed at improving the habitat for wildlife, particularly for wading birds such as lapwing and redshank, respectively classified as Red and Amber under the UK Red List for Birds (2015). Features created will help manage and retain water in fields, resulting in shallow pools with muddy margins that provide suitable habitat for wading birds to forage for invertebrates in soft, damp soils.
The features include:
Rills: Meandering channels varying in depth that retain water for a longer period than adjacent grassland. They are arranged in a branching structure supplying water from the perimeter ditches to the middle of fields. They also provide long muddy margins, increasing the feeding area for wading birds.
Scrapes: Shallow depressions with irregular outlines and gentle slopes that seasonally hold water, supporting a rich invertebrate life. Ideal for redshank, that prefer shallow pools of water for feeding.
Bunds: Acting as a barrier to minimise water runoff, earth bunds increase water infiltration in the soil. Long, ditch-side bunds also provide an opportunity for water vole colonisation by maintaining dry banks when the water levels are at their highest.
Islands: Low, flat features that sit higher than peak water levels and provide refuge for waders and wildfowl from nest flooding and give safe spaces for winter roosting.
The works, that officially started in September 2021, also include the creation and repair of crossing points and culverts to allow fine water level control. Ditch enhancements and reprofiling of existing banks will provide niche habitat for water voles and aquatic invertebrates.
Whilst it is still a work in progress, changes on site are becoming more and more noticeable, and not only to the human eye!
To date, restoration work has been completed on two out of the four units. As we progress, we will start to introduce large scale grazing across the reserve that will entail the installation of gateways, fencing and a livestock corral. Grazing is an essential part of reserve management as a short grass sward gives ideal habitat for ground-nesting lapwing. By grazing with cattle and flooding the fields, new plant communities will develop, including wildflowers such as red clover that provide a nectar source for bumblebees like the endangered shrill carder bee, which has a local population on the nearby sea wall. Further updates will come as work continues.
Photo credits: Oystercatcher by Katie Nethercoat (rspb-images.com)