Summary. We update information gathered between 1980 and 1990 and published in Huw Penry's 1994 Bird Atlas of Botswana, by providing details of over 30 species that Penry considered as likely to occur in the country, which subsequently have been accepted onto the Botswana list. We also present additional information on 46 species considered extreme rarities in 1994, some of which have been recorded quite regularly since. Discrepancies between information published in the latest edition of Roberts Birds of Southern Africa (2005) and information held by the Records Subcommittee of BirdLife Botswana are highlighted. A plea is made for visiting birdwatchers to submit records of all scarce species and also descriptions of those rarities recorded fewer than ten times, to the Subcommittee or enter them on World Tickbird.