. The Conservation Atlas of Tropical Forests: the Americas. Establishing Conservation Priorities Using Endemic Birds Rio Grande do No rtc 6- .â¢â¢> 1 ' 1 i' Paraiba ⢠⢠â â ^-Oâ/i ' ⢠â¢' Pernanibuco ⢠⢠⢠⢠/ 7 '^ v_ Alagoas / 10 / 38; 36 Figure Distribution of the seven-coloured tanager Tangani fasniosci in tlie Atlantic forest world. In addition to these extant species, a total of 59 restricted- range bird species which have become extinct since 1800 were used in the analysis. The initial aim was to identify areas with concentrations of restricted-range species. Areas which su
. The Conservation Atlas of Tropical Forests: the Americas. Establishing Conservation Priorities Using Endemic Birds Rio Grande do No rtc 6- .â¢â¢> 1 ' 1 i' Paraiba ⢠⢠â â ^-Oâ/i ' ⢠â¢' Pernanibuco ⢠⢠⢠⢠/ 7 '^ v_ Alagoas / 10 / 38; 36 Figure Distribution of the seven-coloured tanager Tangani fasniosci in tlie Atlantic forest world. In addition to these extant species, a total of 59 restricted- range bird species which have become extinct since 1800 were used in the analysis. The initial aim was to identify areas with concentrations of restricted-range species. Areas which support two or more species that are entirely confined to them were considered of primary importance, and are referred to as Endemic Bird Areas (EBAs). The EBAs were identified by a combination of a multi- variate statistical analysis and an investigation of the habitat and altitudinal requirements of the bird species. Simultaneously, patterns of endcmism in other life-forms were investigated and shown to be closely congruent with those that emerged from the avian analysis. Global Patterns More than one-quarter of all bird species have a breeding range of sq. km or less, and these restricted-range species are found in 147 countries out of the world total of 235, that is in more than 62 per cent of all countries. A total of 223 EBAs, all with at least two restricted-range bird species confined to them, have been identified (Long er ai. in press). Over 95 per cent of restricted-range birds occur in these areas. The remaining 125 either do not overlap with other restricted-range species, or overlap with only a small portion of their ranges. The number of restricted-range species in each of the world's EBAs ranges from just two to 67, but the majority of areas (53 per cent) support between two and 10. The number of restricted- range species per unit area also varies considerably, with small island EBAs often containing relatively high numbers of species
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