預測會減少的歐洲鳥種中，最顯著的前3名依序是田鷸（common snipe）、草地鷚（meadow pipit）、花雀（brambling）。
研究顯示某些歐洲鳥種未來將會增加，最多的前3名依序為黑頭林鶯（Sardinian warbler）、亞高山林鶯（subalpine warbler）、黃喉蜂虎（European bee-eater）。
Climate change is having an observable impact on birds across Europe, according to a scientific team that has created the world's first indicator of the impacts of climate change on wildlife at a continental scale.
Of the 122 common species included in the analysis, 75 percent are predicted to experience declines across their ranges if they continue to respond to climatic warming in the way the models predict, and in the absence of other barriers. The remaining 25 percent of species are projected to increase.
"The results show the number of species being badly affected outnumbers the species that might benefit by three to one," said lead author Dr. Gregory from the Royal Society for the Protection of Birds. "Although we have only had a very small actual rise in global average temperature, it is staggering to realize how much change we are noticing in wildlife populations."
Limiting global warming to no more than 2°Celsius above the temperature in pre-industrial times is necessary to avert the worst consequences of climate change, many scientists agree.
In a study published in the journal "PloS ONE," Dr. Gregory and his team showed a strong link between the observed population change of common and widespread European bird species and the projected range change associated with climate change.
Dr. Gregory credited skilled amateur birdwatchers across Europe who provided observations to the team through their work with the Pan-European Common Bird Monitoring Scheme. This project is a result of the common effort and shared goals of BirdLife International and the European Bird Census Council.
The team compiled an indicator showing how climate change is affecting wildlife across Europe. The new indicator already has been included in a high profile set of indicators being used by the European Commission to assess progress towards the target of halting biodiversity loss by 2010.
The paper and the indicator were produced by scientists from the RSPB, Durham University, the University of Cambridge, the European Bird Census Council, the Muséum National d'Histoire Naturelle, the Czech Society for Ornithology, and Statistics Netherlands.
"Those birds we predict should fare well under climate change have been increasing since the mid-80s, and those we predict should do badly have declined over the same period," said Dr. Stephen Willis of Durham University. "The worry is that the declining group actually comprises 75 percent of the species we studied."
Of those species projected to decline across Europe, the top three worst performers, in order, are: common snipe, Gallinago gallinago; meadow pipit, Anthus pratensis; and brambling, Fringilla montifringilla.
The research shows that the populations of a number of species are projected to increase across Europe. The top three increasing species, in order, are Sardinian warbler, Sylvia melanocephala; subalpine warbler, Sylvia cantillans; and European bee-eater, Merops apiaster.
"This is the first robust indicator of climate change impacts on biodiversity," said Dr. Stuart Butchart, BirdLife International's global research and indicators coordinator. "It provides another example of how information from birds - the best known class of organisms - can be used to monitor our growing footprint on the planet."