A few weeks ago, along a ridge somewhere north of the South African city of Pretoria, Sacha Dench returned to the skies once more. The Dartmoor-based conservationist, nicknamed the “Human Swan” for ...

For the Bewick's swan, a species known for its long migratory journey, warmer temperatures have resulted in fewer swans returning to the U.K. each winter. A recent report from the Wildfowl and ...