I have finished work on my new WorldBirds Android Smartphone application, which is freely available for download from https://nzbirding.com/worldbirds/ (this page has the link to the files to download from the Google Drive source site). It is a list of all birds in the world, aligned to the latest IOC list (currently v13.2, with 11, 161 species) with checklists for 278 countries/regions/territories. There are thumbnail pictures for almost all the species, with links to birding sites with detailed information on each species. You can log bird sightings with the GPS co-ordinates, supported by Google Maps, and keep track of all your sightings. I have back-loaded by sightings from my earlier birding checklist applications, and I have over 10,000 sightings for the 1600+ species I have seen in 18 countries around the world. We will be using the checklist as we continue to visit countries and bird around the world.