There are more than 12,000 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.
There are a few ways by which you can help the development of this page, such as joining the Flickr group for photos or providing translations of the site in addition languages.