Avibase is an extensive database information system about all birds of the world, containing over 53 million records about 10,000 species and 22,000 subspecies of birds, including distribution information for 20,000 regions, taxonomy, synonyms in several languages and more. This site is managed by Denis Lepage and hosted by Birds Canada, the Canadian copartner of Birdlife International. Avibase has been a work in progress since 1992 and I am now pleased to offer it as a service to the bird-watching and scientific community.
© Denis Lepage 2025 - Number of records currently in Avibase: 53,873,005 - Last update: 2024-12-27
Over the past few months, I have incorporated the latest versions of the IOC, Clements/eBird and Birdlife/HBW checklists into Avibase. I have also continued to expand on distribution data, with over 300,000 new records added since September, as well as 93 new regions (mostly islands around the Baja Peninsula, Mexico, and around Palawan, Philippines, as well as corrected some errors and omissions for Brazil municipalities) .
In addition, I have continued the work on the bibliographic data, with some 52,000 out of 89,000 original descriptions now tied to their original source (mostly on the Biodiversity Heritage Library). While some obscure sources remain currently unavailable online, I expect that vast majority of the remaining ones can still be found! I have also continued the painstaking work of trying to link all original descriptions to taxonomic concepts (avibase ID's), with around 52,000 of them now completed, many of them resoved into the synonymy of the current names.
Finally, I have also started to better align my master taxonomy and bring it more current, to align with the work of the Working Group Avian Checklists due for publication in the first half of 2025, and the other global taxonomies that are participating in this effort.
Bird of the day: Zimmerius parvus (Mistletoe Tyrannulet)
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