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
Aptornis	Aptornis sp.	fossil genus (extinct)
Aptornis defossor	South Island Adzebill	fossil species (extinct)
Aptornis otidiformis	North Island Adzebill	fossil species (extinct)
Aptornis proasciarostratus	St. Bathans Adzebill	fossil species (extinct)
Aptornis otidiformes		fossil species (extinct)