Avibase - the world bird database
Some of the functionalities of myAvibase include: ability to maintain several lifelists (world, country, annual lists, etc.), and to link them together so new observations are automatically added where they need to be; tools to import your existing lifelist from a text format or directly from eBird with a simple click of a button; tools to upgrade your lifelist to another taxonomic authority or highlight potential problems related to taxonomic treatment; reports and maps showing you how many new species you can expect in different parts of the world, and at different times of year, so you can plan your next birding trip; view checklists for a region that highlights your own observations or your target birds.