"Climatic debt" - The New Problem
Animal and insect species in Europe are losing the fight to keep up with rapid changes in climate in a new phenomenon dubbed "climatic debt", according to an international study.
The findings saw birds lag behind their normal climate zones, on average by 212 kilometres and butterflies by 135km.
Some birds, such as the black and white pied flycatcher, are unable to adapt to the encroaching warmth and are not naturally moving north to cooler areas, according to experts writing in the journal Nature.
Numbers of the pied flycatcher have halved in the UK since 1995 – researchers believe the birds are not breeding as prolifically as they used to because of rising temperatures.
What UK rising temperatures?
Others, like the golden plover, are in danger of extinction as traditional food sources disappear. The plover's main food source – the cranefly – cannot survive in warmer temperatures.
The population crash in craneflies or Daddy Longlegs was because of a dry autumn in 2007 - they need damp soil to lay their eggs in. The population has largely recovered in subsequent years.
Experts are now suggesting some threatened species should be moved to new climate spaces, before they become extinct.
"It's something that's never been an issue before," said Mr Brereton. "Do we let the species become extinct or could we play God a bit and move them into places they've never occurred before?"
Why do I feel that a bird that can't be bothered to fly north a few miles isn't a problem we should worry about?
There are more important instances of climatic debt to worry about...