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
Cathayornis	Cathayornis sp.	fossil genus (extinct)
Cathayornis aberransis		fossil species (extinct)
Cathayornis chabuensis		fossil species (extinct)
Cathayornis yandica		fossil species (extinct)
Eocathyornis walkeri		fossil species (extinct)
Longchengornis	Longchenornis sp.	fossil genus (extinct)
Longchengornis sanyanensis		fossil species (extinct)