LONDON, March 14 (UPI) -- Spring has arrived in Britain this year, the result of global climate change, a survey of nature watchers indicates.
The Daily Telegraph reported Saturday that naturists say they have spotted birds nesting and plants already flowering across Britain despite one of the coldest winters in recent memory, the Woodland Trust says.
"The timing of natural events is one of the most responsive aspects of the natural world to warming, so it is an important indicator of change," said Shaun Nixon, the survey's manager.
"Even in a year like this, with an apparent return to the winters of old, things seem to be happening and we have already had confirmation of frogspawn seen as early as December."
Spring does not officially begin until next week's vernal equinox.
"So far this year it has been fairly cool, but temperatures this weekend will be up," said Helen Chivers, a government weather forecaster.
The newspaper noted that this week, 2,500 leading environmental scientists warned politicians of the affects of global warming if they fail to reduce greenhouse gas emissions.