A new study suggests that forest cover shouldn't below 40% or it will cause drastic losses in original bird species. Importantly, the study also shows that highly specialized bird species already start to decline significantly when the percentage of forest dips to as much as 70%.

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A new study suggests that forest cover shouldn't below 40% or it will cause drastic losses in original bird species. Importantly, the study also shows that highly specialized bird species already start to decline significantly when the percentage of forest dips to as much as 70%.