Swift Nesting Holes Blocked in Derbyshire Rail Viaduct Refurbishment

A £7.5m refurbishment of a Derbyshire railway viaduct has sparked outrage among nature lovers and conservationists. The project, undertaken by Network Rail, has resulted in the blocking of swift nesting holes that have been used by the birds for generations.

Campaigners had appealed to Network Rail to preserve the tiny gaps in the stonework, which serve as ancestral nesting sites for the swifts. However, three holes were filled with mortar in February, sparking concerns about the impact on the local swift population.

“It’s utterly heartbreaking,” said Deb Pitman, a swift campaigner. “Seeing footage of what happens when swifts return to a blocked nest is deeply upsetting. They repeatedly try to access their entry point, sometimes with fatal consequences.”

The swift population in Britain has declined by 66% between 1995 and 2022, largely due to the widespread loss of nesting holes in older roofs and buildings. Campaigners argue that preserving the swift holes in the viaduct would have no impact on the structural integrity of the structure.

Network Rail claims to have consulted ecologists and created exclusion zones to protect the nesting swifts during the refurbishment work. However, campaigners dispute this, citing 38 pieces of evidence that show at least nine nest sites on the viaducts.

The British Transport Police’s wildlife crime team is investigating whether nesting birds may have been disturbed during the refurbishment work. Campaigners plan to hold a vigil beneath the viaduct on Saturday in the hope that the holes will be unblocked before the swifts return around the end of April to breed.