We've just updated the IOC World List to the latest published version 7.2 (as updated in April 2017), incorporating also updates 6.4 and 7.1.

As always, you'll be notified of the taxonomic updates you need to apply.

From American Birding Association's Birding Magazine (October 2016)

BUBO is a listing website geared toward “friendly comparison” with other birders. About 3,500 birders worldwide use BUBO, tallying everything from world life lists to ABA year lists. An interesting aspect of BUBO is that you can view everyone else’s lists, poking around to find out where other birders are in their listing quests and gleaning tips on where to find coveted species.

Read the full "World Listing Software: An Abundance of Riches" article.


The most recent two updates, 6.2 from April and 6.3 from July, of the IOC World List have now been applied in BUBO Listing.

Taxonomic updates are applied as normal, and you will be notified if any updates impact you.

We have just completed applying the August 2016 updates to the eBird/Clements list. Several splits will impact BUBO Listers, including Leach's Storm-Petrel, Emerald Dove, Western Scrub-Jay, Greater Short-toed Lark and Crested Lark. There are a few lumps as well, including Caribbean Coot and Barbary Falcon - hopefully the net effect is that most listers will gain.

Taxonomic updates are applied as normal, and you will be notified if any updates impact you. The updated Clements checklist can be viewed in full.

IOC updates will be applied in a couple of weeks.

The latest version 6.1 of the IOC world list is now available. Five new species have been added, with Sedge Wren the most likely addition for BUBO Listers.

The long overdue updates to both the AOU North and Middle American checklist and the ABA area checklist, have also been added. Amongst the most interesting changes for listers include the split of Ridgway's Rail from Clapper Rail, Xantus's Murrelet split into Scripps's and Guadalupe, Sage Sparrow split into Sagebrush Sparrow and Bell’s Sparrow, acceptance of both Fea's and Zino's Petrels, as well as a number of exotic species now considered established, including Egyptian Goose, Nanday Parakeet and Rosy-faced Lovebird.

  • Light-footed Ridgeway (clapper) rail
  • Light-footed Ridgeway (clapper) rail
    Light-footed Ridgeway (clapper) rail