As the result of some eight years of fieldwork, 469 bird species have been recorded at the Jaú National Park by the year 2002. Fieldwork conducted between 2000 and 2008 added 12 species to the list, including Myrmotherula klagesi, Cephalopterus ornatus, Campylorhamphus procurvoides, Venilinornis cassini, Pteroglossus aracari, Todirostrum pictum, Monasa atra, Porphyrio martinica, and Percnostola rufifrons which were restricted to fluvial islands of Rio Negro. All new records belong to species which are either little known, have very low natural densities, are patchily distributed or are vagrants.