The RLI for European birds based on panEuropean extinction risk uses information from the Birds in Europe database (Tucker and Heath 1994; BirdLife International, 2004) to measure the projected overall regional extinction risk of sets of species, and to track changes in this risk
Albania,Armenia,Austria,Azerbaijan,Belarus,Belgium,Bosnia and Herzegovina,Bulgaria,Croatia,Cyprus,Czech Republic,Denmark,Estonia,Finland,France,Georgia,Germany,Greece,Hungary,Iceland,Ireland,Italy,Kazakhstan,Kyrgyzstan,Latvia,Liechtenstein,Lithuania,Luxembourg,Malta,Moldova,Montenegro,Netherlands,Norway,Poland,Portugal,Romania,Russia,Serbia,Slovakia,Slovenia,Spain,Sweden,Switzerland,Tajikistan,Turkey,Turkmenistan,Ukraine,United Kingdom,Uzbekistan
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It is based on the proportion of species in each category on the regional Red List, and changes in this proportion over time resulting from genuine improvement or deterioration in the status of individual species. An RLI value of 1 (one) equates to all species being categorised as Least Concern at the European level, while an RLI value of 0 (zero) indicates that all species are extinct in Europe.