Conservationists have launched a last-ditch attempt to track down the slender-billed curlew - Europe's rarest bird.
The crow-sized wading bird has not been spotted since 1999, but hopes remain that a few individuals still exist.
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Bird group looks to last-ditch bid to find rare curlew
Conservationists have launched a last-ditch attempt to track down the slender-billed curlew - Europe's rarest bird.
