"Avibase is an extensive database information system about all birds of the world, containing over 2 million records about 10,000 species and 22,000 subspecies of birds, including distribution information, taxonomy, synonyms in several languages and more."
Ämnesord
Fåglar (barn)
Birds (LCSH)
Birds -- Nomenclature. (LCSH)
Birds -- Geographical distribution -- Maps. (LCSH)