Races at Sedgefield racecourse in County Durham have been diverted to avoid fence six because of nesting ducks.
All chases on May 14th will omit the Roadside fence.
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Andrew Pullan's canoe capsized and he was pulled under the water near Barnard Castle in October 2013.
298 people were killed in the atrocity including Newcastle United fans Liam Sweeney & John Alder.
£100,000 of vital maintenance work is being carried out on the Tees Barrage.