The ultimate aim is for the colony to increase to the point that the birds have to look for nesting sites elsewhere - a pair tried to nest on the shingle ridge
at Rhyl harbour.
This is an extraordinary shingle ridge
stretching 18 miles from West Bay, where the pebbles are small and colourful, to Portland Bill where they are dull and the size of King Edward potatoes.
The shingle ridge
supports a maritime plants such as Sea Kale, Sea Campion, Thrift and Yellow horned Poppy.
Built on a shingle ridge
in Cardigan Bay, the new reef at Borth near Aberystwyth is on schedule for completion in November and will combat the threat of coastal erosion and flooding to properties.
Examples include Shuhei Endo's ar+d 2000 winner, the lavatories and apartment for Hyogo Prefecture, and Rural Studio, some shacks on the shingle ridge
at Dungeness, the corrugated iron St Michael's Church, Hythe and more.
A flock of Twite fed on Horned Poppy seeds on the shingle ridge
at NWWT Cemlyn, where one from western Scotland was caught by ringers last week; an overwintering Whimbrel was seen at Cemlyn.
Near Holyhead Details 01407 764973 Cemlyn Nature Reserve Shingle ridge
and brackish lagoon.
At the Cemlyn Estate in north Anglesey, for example, there is a shingle ridge
which separates the beach and a freshwater lake which has small islands which are the habitat of sandwich terns.
The flock is still at Cemlyn, feeding on Horned Poppy seeds on the shingle ridge
People can marvel at insects and wildflowers in the sand dunes of Newborough Warren or the hive of activity on the rocky cliffs of South Stack or even the shingle ridge
at Cemlyn, where thousands of breeding seabirds will be busy feeding their chicks.
One storm caused a near breach in the shingle ridge
at Cemlyn on Anglesey, and half of the car park at Abereiddi in Pembrokeshire disappeared overnight.
In a letter to Defra written to accompany the demonstration, protesters said: "We, the people of Walberswick, are sending out an SOS to this Government and calling on Defra to save our shingle ridge
, save our marshes and save our community by reversing its recent decisions to retreat and let the sea in all around us.