Common farmland bird index (index, latest year = 100) reached 100 Index, latest year = 100 in 2008 in Portugal, according to . This is 4.85% less than in the previous year.
Historically, Common Farmland Bird Index (Index, latest year = 100) in Portugal reached an all time high of 108 Index, latest year = 100 in 2006 and an all time low of 95.3 Index, latest year = 100 in 2005.
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