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
Ichthyornithidae	Ichthyornithidae	higher-level taxonomy
Ichthyornis	Ichthyornis sp.	fossil genus (extinct)
Ichthyornis dispar		fossil species (extinct)
Ichthyornis dispar (antecessor)		fossil species (extinct)
Ichthyornis minusculus		fossil species (extinct)
Ichthyornis sp.A		fossil species (extinct)
Ichthyornis sp.B		fossil species (extinct)
Ichthyornis lentus		fossil species (extinct)