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There are more than 20,000 regional checklists in Avibase, offered in 9 different taxonomies, including synonyms more than 175 languages. Each checklist can be viewed with photos shared by the birding community, and also printed as PDF checklists for field use.
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Czerkas, Stephen J.
Author ID	652
Abbrev. name	Czerkas, SJ
Full name	Czerkas, Stephen J.
Biography
Publ. years	2002
#Names	9
Co-authors: Ji Q; Li JL; Li Y; Xu X; Yuan C; Zhang D;

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