Impact of climate change on bird populations (no further updates)

• Climate change is having a detectable effect on bird populations at a European scale, including both negative and positive effects.
• The number of bird species whose populations are observed to be negatively impacted by climatic change is three times larger than those observed to be positively affected by climate warming in this set of widespread European land birds.
• The Climatic Impact Indicator, which illustrates the impact of climate change on bird populations, has increased strongly in the past twenty years, coinciding with a period of rapid climatic warming in Europe. Potential links between changes in bird populations and ecosystem functioning and resilience are not well understood.

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