Lost and found: a gap analysis for the Neotropical avifauna

Most birdwatchers dream of discovering vagrants, or a species new to science, but there is a special charm about finding a bird considered 'lost' for many years. These species, described and catalogued long ago, have escaped detection for decades on end. A few of them, for one reason or another, are probably extinct, but most are still with us, as history has tended to prove.