Avibase - The World Bird Database

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MyAvibase allows you to create and manage your own lifelists, and produce useful reports to help you plan your next birding excursion.
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Checklists

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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Scientific name	Common name	Status
Diogenornis	Diogenornis sp.	fossil genus (extinct)
Diogenornis fragilis		fossil species (extinct)
Opisthodactylus	Opisthodactylus sp.	fossil genus (extinct)
Opisthodactylus patagonicus		fossil species (extinct)