The updates include changes of recommended names or classification, additions of newly described species, corrections of nomenclature, and updates of species taxonomy. The IOC World Bird List complements three other primary world bird lists that differ slightly in their primary goals and taxonomic philosophy, i.e.

Avibase is an extensive database information system about all birds of the world, containing over &1 million records about 10,000 species and 22,000 subspecies of birds, including distribution information for 20,000 regions, taxonomy, synonyms in several languages and more.

Avibase is an extensive database information system about all birds of the world, containing over &1 million records about 10,000 species and 22,000 subspecies of birds, including distribution information for 20,000 regions, taxonomy, synonyms in several languages and more.

The fox sparrow (Passerella iliaca) is a large New World sparrow. It is the only member of the genus Passerella , although some authors split the species into four (see below). Taxonomy

Rare Western Palearctic birds: Red Fox Sparrow in Estonia. Publish date: 14/12/2012. Josh Jones describes a successful weekend trip to the Baltic to see the Western Palearctic's third Fox Sparrow.